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Journal articles on the topic 'Local Field Potential (LFP)'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 September 2023

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1

David, Stephen V., Nicolas Malaval, and Shihab A. Shamma. "Decoupling Action Potential Bias from Cortical Local Field Potentials." Computational Intelligence and Neuroscience 2010 (2010): 1–12. http://dx.doi.org/10.1155/2010/393019.

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Neurophysiologists have recently become interested in studying neuronal population activity through local field potential (LFP) recordings during experiments that also record the activity of single neurons. This experimental approach differs from early LFP studies because it uses high impendence electrodes that can also isolate single neuron activity. A possible complication for such studies is that the synaptic potentials and action potentials of the small subset of isolated neurons may contribute disproportionately to the LFP signal, biasing activity in the larger nearby neuronal population

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Ding, Nai, Jonathan Z. Simon, Shihab A. Shamma, and Stephen V. David. "Encoding of natural sounds by variance of the cortical local field potential." Journal of Neurophysiology 115, no. 5 (2016): 2389–98. http://dx.doi.org/10.1152/jn.00652.2015.

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Neural encoding of sensory stimuli is typically studied by averaging neural signals across repetitions of the same stimulus. However, recent work has suggested that the variance of neural activity across repeated trials can also depend on sensory inputs. Here we characterize how intertrial variance of the local field potential (LFP) in primary auditory cortex of awake ferrets is affected by continuous natural sound stimuli. We find that natural sounds often suppress the intertrial variance of low-frequency LFP (<16 Hz). However, the amount of the variance reduction is not significantly corr

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Lee, Sung, Kyeong-Seok Lee, Saurav Sorcar, Abdul Razzaq, Maan-Gee Lee, and Su-Il In. "Novel Porous Brain Electrodes for Augmented Local Field Potential Signal Detection." Materials 12, no. 3 (2019): 542. http://dx.doi.org/10.3390/ma12030542.

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Intracerebral local field potential (LFP) measurements are commonly used to monitor brain activity, providing insight into the flow of information across neural networks. Herein we describe synthesis and application of a neural electrode possessing a nano/micro-scale porous surface topology for improved LFP measurement. Compared with conventional brain electrodes, the porous electrodes demonstrate higher measured amplitudes with lower noise levels.

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Baranauskas, Gytis, Emma Maggiolini, Alessandro Vato, et al. "Origins of 1/f2 scaling in the power spectrum of intracortical local field potential." Journal of Neurophysiology 107, no. 3 (2012): 984–94. http://dx.doi.org/10.1152/jn.00470.2011.

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It has been noted that the power spectrum of intracortical local field potential (LFP) often scales as 1/f−2. It is thought that LFP mostly represents the spiking-related neuronal activity such as synaptic currents and spikes in the vicinity of the recording electrode, but no 1/f2 scaling is detected in the spike power. Although tissue filtering or modulation of spiking activity by UP and DOWN states could account for the observed LFP scaling, there is no consensus as to how it arises. We addressed this question by recording simultaneously LFP and single neurons (“single units”) from multiple

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Yin, Liyong, Guangrong Zhang, and Fuzai Yin. "Measuring Synchronization between Spikes and Local Field Potential Based on the Kullback–Leibler Divergence." Computational Intelligence and Neuroscience 2021 (September 9, 2021): 1–9. http://dx.doi.org/10.1155/2021/9954302.

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Neurophysiological studies have shown that there is a close relationship between spikes and local field potential (LFP), which reflects crucial neural coding information. In this paper, we used a new method to evaluate the synchronization between spikes and LFP. All possible phases of LFP from −π to π were first binned into a freely chosen number of bins; then, the probability of spikes falling in each bin was calculated, and the deviation degree from the uniform distribution based on the Kullback–Leibler divergence was calculated to define the synchronization between spikes and LFP. The simul

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Quansah Amissah, Richard, Abdalla M. Albeely, Elise M. Bragg, Melissa L. Perreault, Wilder T. Doucette, and Jibran Y. Khokhar. "A Simple, Lightweight, and Low-Cost Customizable Multielectrode Array for Local Field Potential Recordings." eneuro 10, no. 8 (2023): ENEURO.0212–23.2023. http://dx.doi.org/10.1523/eneuro.0212-23.2023.

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AbstractLocal field potential (LFP) recording is a valuable method for assessing brain systems communication. Multiple methods have been developed to collect LFP data to study the rhythmic activity of the brain. These methods range from the use of single or bundled metal electrodes to electrode arrays that can target multiple brain regions. Although these electrodes are efficient in collecting LFP activity, they can be expensive, difficult to build, and less adaptable to different applications, which may include targeting multiple brain regions simultaneously. Here, the building process for a

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Baumel, Yuval, and Dana Cohen. "State-dependent entrainment of cerebellar nuclear neurons to the local field potential during voluntary movements." Journal of Neurophysiology 126, no. 1 (2021): 112–22. http://dx.doi.org/10.1152/jn.00551.2020.

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We studied the interaction between single neurons and the LFP in the cerebellar nuclei of freely moving rats. We show that during movement, the neurons oscillated in the theta frequency band contingent on the concurrent LFP oscillation power in the same band; the neurons oscillated primarily when the LFP power was either high or low. We are the first to demonstrate a nonlinear, state-dependent entrainment of single neurons to the LFP.

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Seyedhosseini, Mojtaba, S. Shushruth, Tyler Davis, et al. "Informative features of local field potential signals in primary visual cortex during natural image stimulation." Journal of Neurophysiology 113, no. 5 (2015): 1520–32. http://dx.doi.org/10.1152/jn.00278.2014.

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The local field potential (LFP) is of growing importance in neurophysiology as a metric of network activity and as a readout signal for use in brain-machine interfaces. However, there are uncertainties regarding the kind and visual field extent of information carried by LFP signals, as well as the specific features of the LFP signal conveying such information, especially under naturalistic conditions. To address these questions, we recorded LFP responses to natural images in V1 of awake and anesthetized macaques using Utah multielectrode arrays. First, we have shown that it is possible to iden

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Zanos, Theodoros P., Patrick J. Mineault, and Christopher C. Pack. "Removal of Spurious Correlations Between Spikes and Local Field Potentials." Journal of Neurophysiology 105, no. 1 (2011): 474–86. http://dx.doi.org/10.1152/jn.00642.2010.

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Single neurons carry out important sensory and motor functions related to the larger networks in which they are embedded. Understanding the relationships between single-neuron spiking and network activity is therefore of great importance and the latter can be readily estimated from low-frequency brain signals known as local field potentials (LFPs). In this work we examine a number of issues related to the estimation of spike and LFP signals. We show that spike trains and individual spikes contain power at the frequencies that are typically thought to be exclusively related to LFPs, such that s

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Courtemanche, Richard, Jean-Pierre Pellerin, and Yves Lamarre. "Local Field Potential Oscillations in Primate Cerebellar Cortex: Modulation During Active and Passive Expectancy." Journal of Neurophysiology 88, no. 2 (2002): 771–82. http://dx.doi.org/10.1152/jn.2002.88.2.771.

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Cerebellar local field potential (LFP) oscillations were recorded in the paramedian lobule of one hemisphere, while monkeys were in two behavioral conditions: actively performing an elbow flexion-extension or a lever-press task in response to an auditory or visual stimulus to get reward (active condition), or waiting quietly for the reward to come in the same time window after the appearance of the stimulus (passive condition). The oscillations in the paramedian lobule were first characterized in four monkeys, and they showed an idiosyncratic frequency for each monkey, between 13 and 25 Hz. Th

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Premereur, Elsie, Wim Vanduffel, and Peter Janssen. "Local Field Potential Activity Associated with Temporal Expectations in the Macaque Lateral Intraparietal Area." Journal of Cognitive Neuroscience 24, no. 6 (2012): 1314–30. http://dx.doi.org/10.1162/jocn_a_00221.

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Oscillatory brain activity is attracting increasing interest in cognitive neuroscience. Numerous EEG (magnetoencephalography) and local field potential (LFP) measurements have related cognitive functions to different types of brain oscillations, but the functional significance of these rhythms remains poorly understood. Despite its proven value, LFP activity has not been extensively tested in the macaque lateral intraparietal area (LIP), which has been implicated in a wide variety of cognitive control processes. We recorded action potentials and LFPs in area LIP during delayed eye movement tas

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Chen, Yan, Xinyu Liu, Shan Li, and Hong Wan. "Decoding Pigeon Behavior Outcomes Using Functional Connections among Local Field Potentials." Computational Intelligence and Neuroscience 2018 (2018): 1–13. http://dx.doi.org/10.1155/2018/3505371.

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Recent studies indicate that the local field potential (LFP) carries information about an animal’s behavior, but issues regarding whether there are any relationships between the LFP functional networks and behavior tasks as well as whether it is possible to employ LFP network features to decode the behavioral outcome in a single trial remain unresolved. In this study, we developed a network-based method to decode the behavioral outcomes in pigeons by using the functional connectivity strength values among LFPs recorded from the nidopallium caudolaterale (NCL). In our method, the functional con

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Emeric, Erik E., Joshua W. Brown, Melanie Leslie, Pierre Pouget, Veit Stuphorn, and Jeffrey D. Schall. "Performance Monitoring Local Field Potentials in the Medial Frontal Cortex of Primates: Anterior Cingulate Cortex." Journal of Neurophysiology 99, no. 2 (2008): 759–72. http://dx.doi.org/10.1152/jn.00896.2006.

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We describe intracranial local field potentials (LFP) recorded in the anterior cingulate cortex (ACC) of macaque monkeys performing a saccade countermanding task. The most prominent feature at ∼70% of sites was greater negative polarity after errors than after rewarded correct trials. This negative polarity was also evoked in unrewarded correct trials. The LFP evoked by the visual target was much less polarized, and the weak presaccadic modulation was insufficient to control the initiation of saccades. When saccades were cancelled, LFP modulation decreased slightly with the magnitude of respon

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Carlson, Kaitlin S., Maggie R. Dillione, and Daniel W. Wesson. "Odor- and state-dependent olfactory tubercle local field potential dynamics in awake rats." Journal of Neurophysiology 111, no. 10 (2014): 2109–23. http://dx.doi.org/10.1152/jn.00829.2013.

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The olfactory tubercle (OT), a trilaminar structure located in the basal forebrain of mammals, is thought to play an important role in olfaction. While evidence has accumulated regarding the contributions of the OT to odor information processing, studies exploring the role of the OT in olfaction in awake animals remain unavailable. In the present study, we begin to address this void through multiday recordings of local field potential (LFP) activity within the OT of awake, freely exploring Long-Evans rats. We observed spontaneous OT LFP activity consisting of theta- (2–12 Hz), beta- (15–35 Hz)

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Donoghue, John P., Jerome N. Sanes, Nicholas G. Hatsopoulos, and Gyöngyi Gaál. "Neural Discharge and Local Field Potential Oscillations in Primate Motor Cortex During Voluntary Movements." Journal of Neurophysiology 79, no. 1 (1998): 159–73. http://dx.doi.org/10.1152/jn.1998.79.1.159.

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Donoghue, John P., Jerome N. Sanes, Nicholas G. Hatsopoulos, and Gyöngyi Gaál. Neural discharge and local field potential oscillations in primate motor cortex during voluntary movements. J. Neurophysiol. 79: 159–173, 1998. The role of “fast,” or gamma band (20–80 Hz), local field potential (LFP) oscillations in representing neuronal activity and in encoding motor behavior was examined in motor cortex of two alert monkeys. Using chronically implanted microwires, we simultaneously recorded LFPs and single or multiple unit (MU) discharge at a group of sites in the precentral gyrus during trained

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Salelkar, Siddhesh, Gowri Manohari Somasekhar, and Supratim Ray. "Distinct frequency bands in the local field potential are differently tuned to stimulus drift rate." Journal of Neurophysiology 120, no. 2 (2018): 681–92. http://dx.doi.org/10.1152/jn.00807.2017.

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Local field potential (LFP) recorded with a microelectrode reflects the activity of several neural processes, including afferent synaptic inputs, microcircuit-level computations, and spiking activity. Objectively probing their contribution requires a design that allows dissociation between these potential contributors. Earlier reports have shown that the primate lateral geniculate nucleus (LGN) has a higher temporal frequency (drift rate) cutoff than the primary visual cortex (V1), such that at higher drift rates inputs into V1 from the LGN continue to persist, whereas output ceases, permittin

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Dubey, Agrita, and Supratim Ray. "Spatial spread of local field potential is band-pass in the primary visual cortex." Journal of Neurophysiology 116, no. 4 (2016): 1986–99. http://dx.doi.org/10.1152/jn.00443.2016.

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Local field potential (LFP) is a valuable tool in understanding brain function and in brain machine-interfacing applications. However, there is no consensus on the spatial extent of the cortex that contributes to the LFP (its “spatial spread”), with different studies reporting values between a few hundred micrometers and several millimeters. Furthermore, the dependency of the spatial spread on frequency, which could reflect properties of the network architecture and extracellular medium, is not well studied, with theory and models predicting either “all-pass” (frequency-independent) or “low-pa

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Rasch, Malte J., Arthur Gretton, Yusuke Murayama, Wolfgang Maass, and Nikos K. Logothetis. "Inferring Spike Trains From Local Field Potentials." Journal of Neurophysiology 99, no. 3 (2008): 1461–76. http://dx.doi.org/10.1152/jn.00919.2007.

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We investigated whether it is possible to infer spike trains solely on the basis of the underlying local field potentials (LFPs). Using support vector machines and linear regression models, we found that in the primary visual cortex (V1) of monkeys, spikes can indeed be inferred from LFPs, at least with moderate success. Although there is a considerable degree of variation across electrodes, the low-frequency structure in spike trains (in the 100-ms range) can be inferred with reasonable accuracy, whereas exact spike positions are not reliably predicted. Two kinds of features of the LFP are ex

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Satzer, David, Shasha Wu, Julia Henry, Emily Doll, and Naoum P. Issa. "Ambulatory Local Field Potential Recordings from the Thalamus in Epilepsy: A Feasibility Study." Stereotactic and Functional Neurosurgery 101, no. 3 (2023): 195–206. http://dx.doi.org/10.1159/000529961.

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<b><i>Introduction:</i></b> Stimulation of the thalamus is gaining favor in the treatment of medically refractory multifocal and generalized epilepsy. Implanted brain stimulators capable of recording ambulatory local field potentials (LFPs) have recently been introduced, but there is little information to guide their use in thalamic stimulation for epilepsy. This study sought to assess the feasibility of chronically recording ambulatory interictal LFP from the thalamus in patients with epilepsy. <b><i>Methods:</i></b> In this pilot study, ambulat

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Kosenko, Peter Olegovich, Aleksey Borisovich Smolikov, Viktor Borisovich Voynov, Pavel Dmitrievich Shaposhnikov, Anton Igorevich Saevskiy, and Valeriy Nikolaevich Kiroy. "Effect of Xylazine–Tiletamine–Zolazepam on the Local Field Potential of the Rat Olfactory Bulb." Comparative Medicine 70, no. 6 (2020): 492–98. http://dx.doi.org/10.30802/aalas-cm-20-990015.

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Neural oscillations of the mammalian olfactory system have been studied for decades. This research suggests they are linked to various processes involved in odor information analysis, depending on the vigilance state and presentation of stimuli. In addition, the effects of various anesthetics, including commonly used ones like chloral hydrate, pentobarbital, ketamine, and urethane, on the local field potential (LFP) in the olfactory bulb (OB) have been studied. In particular, the combination of xylazine and tiletamine–zolazepam has been shown to produce steady anesthesia for an extended period

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Zanos, Stavros, Theodoros P. Zanos, Vasilis Z. Marmarelis, George A. Ojemann, and Eberhard E. Fetz. "Relationships between spike-free local field potentials and spike timing in human temporal cortex." Journal of Neurophysiology 107, no. 7 (2012): 1808–21. http://dx.doi.org/10.1152/jn.00663.2011.

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Intracortical recordings comprise both fast events, action potentials (APs), and slower events, known as local field potentials (LFPs). Although it is believed that LFPs mostly reflect local synaptic activity, it is unclear which of their signal components are most closely related to synaptic potentials and would therefore be causally related to the occurrence of individual APs. This issue is complicated by the significant contribution from AP waveforms, especially at higher LFP frequencies. In recordings of single-cell activity and LFPs from the human temporal cortex, we computed quantitative

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Mock, Vanessa L., Kimberly L. Luke, Jacqueline R. Hembrook-Short, and Farran Briggs. "Phase shifts in high-beta- and low-gamma-band local field potentials predict the focus of visual spatial attention." Journal of Neurophysiology 121, no. 3 (2019): 799–822. http://dx.doi.org/10.1152/jn.00469.2018.

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The local field potential (LFP) contains rich information about activity in local neuronal populations. However, it has been challenging to establish direct links between LFP modulations and task-relevant behavior or cognitive processes, such as attention. We sought to determine whether LFP amplitude or phase modulations are predictive of the allocation of visual spatial attention. LFPs were recorded simultaneously in multiple early visual brain structures of alert macaque monkeys performing attention-demanding detection and discrimination tasks. Attention directed toward the receptive field o

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Wu, Yunfeng, Yuchen Yao, Yugui Xiao, et al. "SEPARATION AND IDENTIFICATION OF RHYTHM COMPONENTS OF LOCAL FIELD POTENTIAL SIGNALS IN AWAKE MICE USING ENSEMBLE EMPIRICAL MODE DECOMPOSITION." Biomedical Engineering: Applications, Basis and Communications 29, no. 04 (2017): 1750029. http://dx.doi.org/10.4015/s1016237217500296.

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Decomposition of local field potential (LFP) signals with different oscillatory rhythms is useful for analysis of various neuronal activities in mice. In this paper, we first removed the power-line interference with high signal fidelity by using a notch filter with infinite impulse response. Next, we applied the ensemble empirical mode decomposition (EEMD) method to separate the LFP signal into low-frequency, Delta, Theta, Beta, Gamma, Ripple, and high-frequency oscillations, in the form of different intrinsic mode functions (IMFs). The LFP signal components with different frequency bands were

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Abosch, Aviva, David Lanctin, Ibrahim Onaran, Lynn Eberly, Maggie Spaniol, and Nuri Firat Ince. "Long-term Recordings of Local Field Potentials From Implanted Deep Brain Stimulation Electrodes." Neurosurgery 71, no. 4 (2012): 804–14. http://dx.doi.org/10.1227/neu.0b013e3182676b91.

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Abstract BACKGROUND: Deep brain stimulation (DBS) of the subthalamic nucleus is an effective treatment for Parkinson disease. However, DBS is not responsive to an individual's disease state, and programming parameters, once established, do not change to reflect disease state. Local field potentials (LFPs) recorded from DBS electrodes are being investigated as potential biomarkers for the Parkinson disease state. However, no patient data exist about what happens to LFPs over the lifetime of the implant. OBJECTIVE: We investigated whether LFP amplitude and response to limb movement differed betw

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Greenwood, Priscilla E., Mark D. McDonnell, and Lawrence M. Ward. "Dynamics of Gamma Bursts in Local Field Potentials." Neural Computation 27, no. 1 (2015): 74–103. http://dx.doi.org/10.1162/neco_a_00688.

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In this letter, we provide a stochastic analysis of, and supporting simulation data for, a stochastic model of the generation of gamma bursts in local field potential (LFP) recordings by interacting populations of excitatory and inhibitory neurons. Our interest is in behavior near a fixed point of the stochastic dynamics of the model. We apply a recent limit theorem of stochastic dynamics to probe into details of this local behavior, obtaining several new results. We show that the stochastic model can be written in terms of a rotation multiplied by a two-dimensional standard Ornstein-Uhlenbeck

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Chen, Shu Li, Zhi Zhong Wang, Li Shi, Hong Wan, and Xiao Ke Niu. "The Feature Selectivity of the Phase of the Local Field Potential in the Primary Visual Cortex." Advanced Materials Research 749 (August 2013): 333–37. http://dx.doi.org/10.4028/www.scientific.net/amr.749.333.

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Phase is an important feature of the local field potential (LFP) and plays a significant role in transmission and processing information in visual system. In this paper, the LFP of Long Evans rats primary visual cortex is recorded by the microelectrode array through the visual stimuli of the checkerboard and different orientation gratings. Then, a multi-mode phase extraction model based on the firing spikes was built. We found that neurons selective orientation information using the third intrinsic mode functions of local field potential during firing spikes.

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Maling, Nicholas, Scott F. Lempka, Zack Blumenfeld, Helen Bronte-Stewart, and Cameron C. McIntyre. "Biophysical basis of subthalamic local field potentials recorded from deep brain stimulation electrodes." Journal of Neurophysiology 120, no. 4 (2018): 1932–44. http://dx.doi.org/10.1152/jn.00067.2018.

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Clinical deep brain stimulation (DBS) technology is evolving to enable chronic recording of local field potentials (LFPs) that represent electrophysiological biomarkers of the underlying disease state. However, little is known about the biophysical basis of LFPs, or how the patient’s unique brain anatomy and electrode placement impact the recordings. Therefore, we developed a patient-specific computational framework to analyze LFP recordings within a clinical DBS context. We selected a subject with Parkinson’s disease implanted with a Medtronic Activa PC+S DBS system and reconstructed their su

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Murthy, V. N., and E. E. Fetz. "Synchronization of neurons during local field potential oscillations in sensorimotor cortex of awake monkeys." Journal of Neurophysiology 76, no. 6 (1996): 3968–82. http://dx.doi.org/10.1152/jn.1996.76.6.3968.

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1. The neural activity associated with 20- to 40-Hz oscillations in sensorimotor cortex of awake monkeys was investigated by recording action potentials of single and multiple units. At a given site, activity of many units became synchronized with local field potential (LFP) oscillations. Cycle-triggered histograms (CTHs) of unit spikes aligned on cycles of LFP oscillations indicated that about two thirds of the recorded units (n = 268) were entrained with LFP oscillations. On average, units had the highest probability of spiking 2.7 ms before peak LFP negativity, corresponding to a -27.6 degr

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Srinath, Ramanujan, and Supratim Ray. "Effect of amplitude correlations on coherence in the local field potential." Journal of Neurophysiology 112, no. 4 (2014): 741–51. http://dx.doi.org/10.1152/jn.00851.2013.

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Neural activity across the brain shows both spatial and temporal correlations at multiple scales, and understanding these correlations is a key step toward understanding cortical processing. Correlation in the local field potential (LFP) recorded from two brain areas is often characterized by computing the coherence, which is generally taken to reflect the degree of phase consistency across trials between two sites. Coherence, however, depends on two factors—phase consistency as well as amplitude covariation across trials—but the spatial structure of amplitude correlations across sites and its

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Brown, Daril E., Jairo I. Chavez, Derek H. Nguyen, et al. "Local field potentials in a pre-motor region predict learned vocal sequences." PLOS Computational Biology 17, no. 9 (2021): e1008100. http://dx.doi.org/10.1371/journal.pcbi.1008100.

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Neuronal activity within the premotor region HVC is tightly synchronized to, and crucial for, the articulate production of learned song in birds. Characterizations of this neural activity detail patterns of sequential bursting in small, carefully identified subsets of neurons in the HVC population. The dynamics of HVC are well described by these characterizations, but have not been verified beyond this scale of measurement. There is a rich history of using local field potentials (LFP) to extract information about behavior that extends beyond the contribution of individual cells. These signals

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Emeric, Erik E., Melanie Leslie, Pierre Pouget, and Jeffrey D. Schall. "Performance Monitoring Local Field Potentials in the Medial Frontal Cortex of Primates: Supplementary Eye Field." Journal of Neurophysiology 104, no. 3 (2010): 1523–37. http://dx.doi.org/10.1152/jn.01001.2009.

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We describe intracranial local field potentials (LFPs) recorded in the supplementary eye field (SEF) of macaque monkeys performing a saccade countermanding task. The most prominent feature at 90% of the sites was a negative-going polarization evoked by a contralateral visual target. At roughly 50% of sites a negative-going polarization was observed preceding saccades, but in stop signal trials this polarization was not modulated in a manner sufficient to control saccade initiation. When saccades were canceled in stop signal trials, LFP modulation increased with the inferred magnitude of respon

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Milekovic, Tomislav, Daniel Bacher, Anish A. Sarma, et al. "Volitional control of single-electrode high gamma local field potentials by people with paralysis." Journal of Neurophysiology 121, no. 4 (2019): 1428–50. http://dx.doi.org/10.1152/jn.00131.2018.

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Intracortical brain-computer interfaces (BCIs) can enable individuals to control effectors, such as a computer cursor, by directly decoding the user’s movement intentions from action potentials and local field potentials (LFPs) recorded within the motor cortex. However, the accuracy and complexity of effector control achieved with such “biomimetic” BCIs will depend on the degree to which the intended movements used to elicit control modulate the neural activity. In particular, channels that do not record distinguishable action potentials and only record LFP modulations may be of limited use fo

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Ince, Nuri Firat, Akshay Gupte, Thomas Wichmann, et al. "Selection of Optimal Programming Contacts Based on Local Field Potential Recordings From Subthalamic Nucleus in Patients With Parkinson's Disease." Neurosurgery 67, no. 2 (2010): 390–97. http://dx.doi.org/10.1227/01.neu.0000372091.64824.63.

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Abstract BACKGROUND In the United States, the most commonly used surgical treatment for patients with Parkinson's disease is the implantation of deep brain stimulation (DBS) electrodes within the subthalamic nucleus. However, DBS device programming remains difficult and is a possible source of decreased efficacy. OBJECTIVE We investigated the relationship between local field potential (LFP) activities in the subthalamic nucleus and the therapeutic response to programming. METHODS We recorded LFPs with macroelectrodes placed unilaterally for DBS in 4 PD patients, 3 weeks after implantation, bef

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Mazzoni, Alberto, Henrik Lindén, Hermann Cuntz, Anders Lansner, Stefano Panzeri, and Gaute T. Einevoll. "Computing the Local Field Potential (LFP) from Integrate-and-Fire Network Models." PLOS Computational Biology 11, no. 12 (2015): e1004584. http://dx.doi.org/10.1371/journal.pcbi.1004584.

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Asher, Itay, Eran Stark, Moshe Abeles, and Yifat Prut. "Comparison of Direction and Object Selectivity of Local Field Potentials and Single Units in Macaque Posterior Parietal Cortex During Prehension." Journal of Neurophysiology 97, no. 5 (2007): 3684–95. http://dx.doi.org/10.1152/jn.00886.2006.

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Recent studies have shown that the local field potential (LFP) can provide a simple method for obtaining an accurate measure of reaching and saccade behaviors. However, it is not clear whether this signal is equally informative with respect to more complex movements. Here we recorded LFPs and single units (SUs) from different areas in the posterior parietal cortex of macaques during a prehension task and compared LFP selectivity with SU selectivity. We found that parietal LFPs were often selective to target direction or object and that percentages of selective LFPs were similar to percentages

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Bansal, Arjun K., Carlos E. Vargas-Irwin, Wilson Truccolo, and John P. Donoghue. "Relationships among low-frequency local field potentials, spiking activity, and three-dimensional reach and grasp kinematics in primary motor and ventral premotor cortices." Journal of Neurophysiology 105, no. 4 (2011): 1603–19. http://dx.doi.org/10.1152/jn.00532.2010.

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A prominent feature of motor cortex field potentials during movement is a distinctive low-frequency local field potential ( lf-LFP) (<4 Hz), referred to as the movement event-related potential (mEP). The lf-LFP appears to be a global signal related to regional synaptic input, but its relationship to nearby output signaled by single unit spiking activity (SUA) or to movement remains to be established. Previous studies comparing information in primary motor cortex (MI) lf-LFPs and SUA in the context of planar reaching tasks concluded that lf-LFPs have more information than spikes about moveme

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Ekstrom, Arne, Nanthia Suthana, David Millett, Itzhak Fried, and Susan Bookheimer. "Correlation Between BOLD fMRI and Theta-Band Local Field Potentials in the Human Hippocampal Area." Journal of Neurophysiology 101, no. 5 (2009): 2668–78. http://dx.doi.org/10.1152/jn.91252.2008.

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The relation between the blood-oxygen-level-dependent (BOLD) signal, which forms the basis of functional magnetic resonance imaging (fMRI), and underlying neural activity is not well understood. We performed high-resolution fMRI in patients scheduled for implantation with depth electrodes for seizure monitoring while they navigated a virtual environment. We then recorded local field potentials (LFPs) and neural firing rate directly from the hippocampal area of the same subjects during the same task. Comparing BOLD signal changes with 396 LFP and 185 neuron recordings in the hippocampal area, w

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Eggermont, J. J., and G. M. Smith. "Synchrony between single-unit activity and local field potentials in relation to periodicity coding in primary auditory cortex." Journal of Neurophysiology 73, no. 1 (1995): 227–45. http://dx.doi.org/10.1152/jn.1995.73.1.227.

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1. We recorded responses from 136 single units and the corresponding local field potentials (LFPs) from the same electrode at 44 positions in the primary auditory cortex of 25 juvenile, ketamine-anesthetized cats in response to periodic click trains with click repetition rates between 1 and 32 Hz; to Poisson-distributed click trains with an average click rate of 4 Hz; and under spontaneous conditions. The aim of the study is to evaluate the synchrony between LFPs and single-unit responses, to compare their coding of periodic stimuli, and to elucidate mechanisms that limit this periodicity codi

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Molnár, László, József Domokos, Isabella Ferando та István Módy. "Bimodal RMS distributions for the objective detection of theta (θ) and gamma (γ) brain oscillations during long-term continuous LFP recordings in mice". MACRo 2015 2, № 1 (2017): 31–37. http://dx.doi.org/10.1515/macro-2017-0004.

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AbstractIn the rodent’s brain the theta (5-12 Hz) and gamma (30-120 Hz) oscillations can be readily detected in local field potential (LFP) recordings, but there is no universal consensus about an objective threshold for their detection.We FIR-filtered the long-term local field potential (LFP) recordings for theta and gamma oscillations. The RMS (root mean square) values of 8 s epochs in 0.5-4 s steps (using corresponding overlaps) were obtained from the filtered recordings. For both theta and gamma oscillations, the histograms showed a bimodal distribution well fitted by two Gaussians. The po

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Wright, Nathaniel C., Mahmood S. Hoseini, Tansel Baran Yasar, and Ralf Wessel. "Coupling of synaptic inputs to local cortical activity differs among neurons and adapts after stimulus onset." Journal of Neurophysiology 118, no. 6 (2017): 3345–59. http://dx.doi.org/10.1152/jn.00398.2017.

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Cortical activity contributes significantly to the high variability of sensory responses of interconnected pyramidal neurons, which has crucial implications for sensory coding. Yet, largely because of technical limitations of in vivo intracellular recordings, the coupling of a pyramidal neuron’s synaptic inputs to the local cortical activity has evaded full understanding. Here we obtained excitatory synaptic conductance ( g) measurements from putative pyramidal neurons and local field potential (LFP) recordings from adjacent cortical circuits during visual processing in the turtle whole brain

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Banerjee, Arpan, Heather L. Dean, and Bijan Pesaran. "A Likelihood Method for Computing Selection Times in Spiking and Local Field Potential Activity." Journal of Neurophysiology 104, no. 6 (2010): 3705–20. http://dx.doi.org/10.1152/jn.00036.2010.

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The timing of neural responses to ongoing behavior is an important measure of the underlying neural processes. Neural processes are distributed across many different brain regions and measures of the timing of neural responses are routinely used to test relationships between different brain regions. Testing detailed models of functional neural circuitry underlying behavior depends on extracting information from single trials. Despite their importance, existing methods for analyzing the timing of information in neural signals on single trials remain limited in their scope and application. We de

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Queiroz, Claudio M., Jan A. Gorter, Fernando H. Lopes da Silva, and Wytse J. Wadman. "Dynamics of Evoked Local Field Potentials in the Hippocampus of Epileptic Rats With Spontaneous Seizures." Journal of Neurophysiology 101, no. 3 (2009): 1588–97. http://dx.doi.org/10.1152/jn.90770.2008.

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A change in neuronal network excitability within the hippocampus is one of the hallmarks of temporal lobe epilepsy (TLE). In the dentate gyrus (DG), however, neuronal loss and mossy fiber sprouting are associated with enhanced inhibition rather than progressive hyperexcitability. The aim of this study was to investigate how alterations in excitability take place in association with spontaneous seizures expressed in the DG before, during, and after a seizure. For this purpose, we used freely moving rats that had developed spontaneous seizures after a kainate-induced status epilepticus (SE). Con

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Temereanca, Simona, and Daniel J. Simons. "Local Field Potentials and the Encoding of Whisker Deflections by Population Firing Synchrony in Thalamic Barreloids." Journal of Neurophysiology 89, no. 4 (2003): 2137–45. http://dx.doi.org/10.1152/jn.00582.2002.

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In layer IV of rat somatosensory cortex, barrel circuitry is highly sensitive to thalamic population firing rates during the first few milliseconds of the whisker-evoked response. This sensitivity of barrel neurons to thalamic firing synchrony was inferred previously from analysis of simulated barrel circuitry and from single-unit recordings performed one at a time. In this study, we investigate stimulus-dependent synchronous activity in the thalamic ventral posteromedial nucleus (VPm) using the more direct approach of local field potential (LFP) recording. We report that thalamic barreloid ne

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Kaur, Simranjit, Ronit Lazar, and Raju Metherate. "Intracortical Pathways Determine Breadth of Subthreshold Frequency Receptive Fields in Primary Auditory Cortex." Journal of Neurophysiology 91, no. 6 (2004): 2551–67. http://dx.doi.org/10.1152/jn.01121.2003.

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To examine the basis of frequency receptive fields in auditory cortex (ACx), we have recorded intracellular (whole cell) and extracellular (local field potential, LFP) responses to tones in anesthetized rats. Frequency receptive fields derived from excitatory postsynaptic potentials (EPSPs) and LFPs from the same location resembled each other in terms of characteristic frequency (CF) and breadth of tuning, suggesting that LFPs reflect local synaptic (including subthreshold) activity. Subthreshold EPSP and LFP receptive fields were remarkably broad, often spanning five octaves (the maximum test

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HU, MENG, and HUALOU LIANG. "PERCEPTUAL SUPPRESSION REVEALED BY ADAPTIVE MULTI-SCALE ENTROPY ANALYSIS OF LOCAL FIELD POTENTIAL IN MONKEY VISUAL CORTEX." International Journal of Neural Systems 23, no. 02 (2013): 1350005. http://dx.doi.org/10.1142/s0129065713500056.

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Generalized flash suppression (GFS), in which a salient visual stimulus can be rendered invisible despite continuous retinal input, provides a rare opportunity to directly study the neural mechanism of visual perception. Previous work based on linear methods, such as spectral analysis, on local field potential (LFP) during GFS has shown that the LFP power at distinctive frequency bands are differentially modulated by perceptual suppression. Yet, the linear method alone may be insufficient for the full assessment of neural dynamic due to the fundamentally nonlinear nature of neural signals. In

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Magill, Peter J., Andrew Sharott, Mark D. Bevan, Peter Brown, and J. Paul Bolam. "Synchronous Unit Activity and Local Field Potentials Evoked in the Subthalamic Nucleus by Cortical Stimulation." Journal of Neurophysiology 92, no. 2 (2004): 700–714. http://dx.doi.org/10.1152/jn.00134.2004.

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The responses of single subthalamic nucleus (STN) neurons to cortical activation are complex and depend on the relative activation of several neuronal circuits, making theoretical extrapolation of single neuron responses to the population level difficult. To understand better the degree of synchrony imposed on STN neurons and associated neuronal networks by cortical activation, we recorded the responses of single units, pairs of neighboring neurons, and local field potentials (LFPs) in STN to discrete electrical stimulation of the cortex in anesthetized rats. Stimulation of ipsilateral frontal

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Kalmbach, Abigail, and Jack Waters. "Modulation of high- and low-frequency components of the cortical local field potential via nicotinic and muscarinic acetylcholine receptors in anesthetized mice." Journal of Neurophysiology 111, no. 2 (2014): 258–72. http://dx.doi.org/10.1152/jn.00244.2013.

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Release of acetylcholine (ACh) in neocortex is important for learning, memory and attention tasks. The primary source of ACh in neocortex is axons ascending from the basal forebrain. Release of ACh from these axons evokes changes in the cortical local field potential (LFP), including a decline in low-frequency spectral power that is often referred to as desynchronization of the LFP and is thought to result from the activation of muscarinic ACh receptors. Using channelrhodopsin-2, we selectively stimulated the axons of only cholinergic basal forebrain neurons in primary somatosensory cortex of

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Arce-McShane, F. I., B. J. Sessle, C. F. Ross, and N. G. Hatsopoulos. "Primary sensorimotor cortex exhibits complex dependencies of spike-field coherence on neuronal firing rates, field power, and behavior." Journal of Neurophysiology 120, no. 1 (2018): 226–38. http://dx.doi.org/10.1152/jn.00037.2018.

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Spike-field coherence (SFC) is widely used to assess cortico-cortical interactions during sensorimotor behavioral tasks by measuring the consistency of the relative phases between the spike train of a neuron and the concurrent local field potentials (LFPs). Interpretations of SFC as a measure of functional connectivity are complicated by theoretical work suggesting that estimates of SFC depend on overall neuronal activity. We evaluated the dependence of SFC on neuronal firing rates, LFP power, and behavior in the primary motor (MIo) and primary somatosensory (SIo) areas of the orofacial sensor

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Swindale, N. V., and M. A. Spacek. "Visual cortex neurons phase-lock selectively to subsets of LFP oscillations." Journal of Neurophysiology 121, no. 6 (2019): 2364–78. http://dx.doi.org/10.1152/jn.00496.2018.

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It is generally thought that apart from receptive field differences, such as preferred orientation and spatial frequency selectivity, primary visual cortex neurons are functionally similar to each other. However, the genetic diversity of cortical neurons plus the existence of inputs additional to those required to explain known receptive field properties might suggest otherwise. Here we report the existence of desynchronized states in anesthetized cat area 17 lasting up to 45 min, characterized by variable narrow-band local field potential (LFP) oscillations in the range 2–100 Hz and the absen

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Bervoets, C., H. Heylen, B. Nuttin, and M. Mc Laughlin. "Local field potentials in the BNST in patients with OCD: acute effects of DBS after symptom provocation." European Psychiatry 65, S1 (2022): S738. http://dx.doi.org/10.1192/j.eurpsy.2022.1907.

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Introduction Obsessive-compulsive disorder (OCD) is a disabling psychiatric disorder that affects 2-3% of the population. Pharmacological or cognitive behavioral therapy can reduce symptoms. Deep brain stimulation is emerging for treatment-resistant patients. Objectives We measured neuronal activity in two patients with treatment-resistant OCD, who had DBS electrodes implanted bilaterally in the BNST. Local field potentials were recorded directly from the BNST during and without symptom provocation and without electrical stimulation. Methods In two patients with a diagnosis of treatment resist

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