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Journal articles on the topic 'Vibrissina'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Fleming, AJ, D. Monty Wood, M. Alex Smith, Tanya Dapkey, Winnie Hallwachs, and Daniel Janzen. "Five new species of Vibrissina Rondani (Diptera: Tachinidae) from Area de Conservación Guanacaste in Northwestern Costa Rica." Biodiversity Data Journal 5 (July 18, 2017): e10967. https://doi.org/10.3897/BDJ.5.e10967.

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We describe five new species in the genus <i>Vibrissina</i> Rondani from Area de Conservación Guanacaste (ACG). All species were reared from wild-caught sawfly larvae (Hymenoptera: Symphyta: Argidae and Tenthredinidae). We provide a morphological description of each species together with information on life history, molecular data, and photographic documentation. Five new species of <i>Vibrissina</i> Rondani: <i>Vibrissina randycurtisi</i> <b>sp. n.</b>, <i>V. randyjonesi</i> <b>sp. n.</b>, <i>V. robertwellsi</i> <b>sp. n.</b>, <i>V. danmartini</i> <b>sp. n.</b>, <i>V. hallwachsorum</i> <b>sp.

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2

YILDIZ, Yafes. "A New Dipteran Parasitoid of Rose Sawfly from Turkey: Vibrissina turrita (Meigen, 1824)." Kastamonu Üniversitesi Orman Fakültesi Dergisi 18, no. 3 (2018): 288–91. http://dx.doi.org/10.17475/kastorman.341693.

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3

Yang, Hui, Chuntian Zhang, Yahui Zhang, and Junjian Li. "The complete mitochondrial genome of Vibrissina turrita (Meigen, 1824) (Diptera, Tachinidae)." Mitochondrial DNA Part B 9, no. 6 (2024): 762–65. http://dx.doi.org/10.1080/23802359.2024.2363344.

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4

Glazewski, S., and K. Fox. "Time course of experience-dependent synaptic potentiation and depression in barrel cortex of adolescent rats." Journal of Neurophysiology 75, no. 4 (1996): 1714–29. http://dx.doi.org/10.1152/jn.1996.75.4.1714.

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1. Plasticity could be induced in (S1) barrel cortex of adolescent rats by reducing the complement of vibrissae on one side of the muzzle to a single whisker for a period of 7, 20, or 60 days. The effect of deprivation was assessed by quantitatively by measuring cortical responses to stimulation of the spared and regrown deprived vibrissae. Vibrissa responses were evoked using a standard stimulus generated by an electromechanical stimulator and measured using poststimulus time histogram analysis. 2. Cells located in layers II/III were found to be plastic beyond postnatal day 28 (P28), whereas

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5

Hutson, K. A., and R. B. Masterton. "The sensory contribution of a single vibrissa's cortical barrel." Journal of Neurophysiology 56, no. 4 (1986): 1196–223. http://dx.doi.org/10.1152/jn.1986.56.4.1196.

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The sensory contribution of the cortex containing the cortical barrel of the C1 vibrissa was studied in rats using the ablation-behavior method. Three independent experiments were performed, each requiring stimulus transduction by the C1 vibrissa but varying in their perceptual demands. The first required detection of sinusoidal oscillations of the vibrissa generated by an oscillating airstream directed vertically onto the vibrissa tip. The second required detection of a change in rate of the oscillation. The third required the blinded rat to jump a gap in an elevated runway after palpating th

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6

Sheth, Bhavin R., Christopher I. Moore, and Mriganka Sur. "Temporal Modulation of Spatial Borders in Rat Barrel Cortex." Journal of Neurophysiology 79, no. 1 (1998): 464–70. http://dx.doi.org/10.1152/jn.1998.79.1.464.

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Sheth, Bhavin R., Christopher I. Moore, and Mriganka Sur. Temporal modulation of spatial borders in rat barrel cortex. J. Neurophysiol. 79: 464–470, 1998. We examined the effects of varying vibrissa stimulation frequency on intrinsic signal and neuronal responses in rat barrel cortex. Optical imaging of intrinsic signals demonstrated that the region of cortex activated by deflection of a single vibrissa at 1 Hz is more diffuse and more widespread than the territory activated at 5 or 10 Hz. With the use of two different paradigms, constant time of stimulation and constant number of vibrissa def

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7

Quist, Brian W., and Mitra J. Z. Hartmann. "Mechanical signals at the base of a rat vibrissa: the effect of intrinsic vibrissa curvature and implications for tactile exploration." Journal of Neurophysiology 107, no. 9 (2012): 2298–312. http://dx.doi.org/10.1152/jn.00372.2011.

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Rats actively tap and sweep their large mystacial vibrissae (whiskers) against objects to tactually explore their surroundings. When a vibrissa makes contact with an object, it bends, and this bending generates forces and bending moments at the vibrissa base. Researchers have only recently begun to quantify these mechanical variables. The present study quantifies the forces and bending moments at the vibrissa base with a quasi-static model of vibrissa deflection. The model was validated with experiments on real vibrissae. Initial simulations demonstrated that almost all vibrissa-object collisi

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8

Castro-Alamancos, Manuel A. "Vibrissa Myoclonus (Rhythmic Retractions) Driven by Resonance of Excitatory Networks in Motor Cortex." Journal of Neurophysiology 96, no. 4 (2006): 1691–98. http://dx.doi.org/10.1152/jn.00454.2006.

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Rodents use rhythmic vibrissae movements to sense the environment. It is currently unclear whether intrinsic activity in the vibrissa motor cortex (vMI) is capable of driving vibrissa movements on a cycle-by-cycle basis. Disinhibition of vMI results in the occurrence of spontaneous 5- to 15-Hz synchronized oscillations. In behaving rats, this synchronous resonance of vMI is shown here to drive contralateral vibrissa movements that are phase-locked to each cycle of the oscillation. In contrast to active whisking during sensing, which consists of active protractions, the vibrissa movements produ

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9

O'Connor, Sean M., Rune W. Berg, and David Kleinfeld. "Coherent Electrical Activity Between Vibrissa Sensory Areas of Cerebellum and Neocortex Is Enhanced During Free Whisking." Journal of Neurophysiology 87, no. 4 (2002): 2137–48. http://dx.doi.org/10.1152/jn.00229.2001.

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We tested if coherent signaling between the sensory vibrissa areas of cerebellum and neocortex in rats was enhanced as they whisked in air. Whisking was accompanied by 5- to 15-Hz oscillations in the mystatial electromyogram, a measure of vibrissa position, and by 5- to 20-Hz oscillations in the differentially recorded local field potential (∇LFP) within the vibrissa area of cerebellum and within the ∇LFP of primary sensory cortex. We observed that only 10% of the activity in either cerebellum or sensory neocortex was significantly phase-locked to rhythmic motion of the vibrissae; the extent o

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10

Solomon, Joseph H., and Mitra J. Z. Hartmann. "Radial distance determination in the rat vibrissal system and the effects of Weber's law." Philosophical Transactions of the Royal Society B: Biological Sciences 366, no. 1581 (2011): 3049–57. http://dx.doi.org/10.1098/rstb.2011.0166.

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Rats rhythmically tap and brush their vibrissae (whiskers) against objects to tactually explore the environment. To extract a complex feature such as the contour of an object, the rat must at least implicitly estimate radial object distance , that is, the distance from the base of the vibrissa to the point of object contact. Radial object distance cannot be directly measured, however, because there are no mechanoreceptors along the vibrissa. Instead, the mechanical signals generated by the vibrissa's interaction with the environment must be transmitted to mechanoreceptors near the vibrissa bas

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11

Chen, Guanjiang, Xiao Liu, Bin Zang, and Mahdi Azarpeyvand. "The effect of the vibrissa shaped cylinder on the aeolian tone mitigation." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 2 (2023): 5304–11. http://dx.doi.org/10.3397/in_2022_0772.

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This paper studies vibrissa shaped cylinder as a passive control method for reducing the aerodynamic noise of the flow past a cylinder. One elliptical cylinder is also investigated for comparison. The far-field noise results show that compared with the cylinder case, the tonal peak almost disappears in the vibrissa shaped cylinder case and the sound pressure level (SPL) could be reduced by up to 30dB within the velocity range from 8m/s to 35m/s. The elliptical cylinder only shows a slight SPL reduction by about 4 dB with a shift in the tonal peak frequency from St=0.2 to St=0.39. Furthermore,

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Shosaku, A. "Cross-correlation analysis of a recurrent inhibitory circuit in the rat thalamus." Journal of Neurophysiology 55, no. 5 (1986): 1030–43. http://dx.doi.org/10.1152/jn.1986.55.5.1030.

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Spontaneous activities of vibrissa-responding neurons in the rat ventrobasal complex (VB) and somatosensory part of the thalamic reticular nucleus (S-TR) were simultaneously recorded and subjected to cross-correlation analysis to investigate the functional organization of recurrent inhibitory action of the S-TR on VB neurons. Excitatory and/or inhibitory interactions were found between approximately 75% (25/34) of the pairs of S-TR and VB neurons with receptive fields (RFs) on the same vibrissa. In contrast, there was no significant interaction between 54 pairs of neurons having RFs on differe

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Moore, Christopher I., and Sacha B. Nelson. "Spatio-Temporal Subthreshold Receptive Fields in the Vibrissa Representation of Rat Primary Somatosensory Cortex." Journal of Neurophysiology 80, no. 6 (1998): 2882–92. http://dx.doi.org/10.1152/jn.1998.80.6.2882.

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Moore, Christopher I. and Sacha B. Nelson. Spatio-temporal subthreshold receptive fields in the vibrissa representation of rat primary somatosensory cortex. J. Neurophysiol. 80: 2882–2892, 1998. Whole cell recordings of synaptic responses evoked by deflection of individual vibrissa were obtained from neurons within adult rat primary somatosensory cortex. To define the spatial and temporal properties of subthreshold receptive fields, the spread, amplitude, latency to onset, rise time to half peak amplitude, and the balance of excitation and inhibition of subthreshold input were quantified. The

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Ahrens, Kurt F., and David Kleinfeld. "Current Flow in Vibrissa Motor Cortex Can Phase-Lock With Exploratory Rhythmic Whisking in Rat." Journal of Neurophysiology 92, no. 3 (2004): 1700–1707. http://dx.doi.org/10.1152/jn.00020.2004.

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Rats explore their environment with rhythmic sweeps of their mystacial vibrissae in the range of 5–15 Hz. We tested if vibrissa primary motor (M1) cortex produces electrical activity that locks to this behavioral output. Rats were trained to whisk in air in search of a food reward. The EMG of the mystacial pad served as a surrogate of vibrissa position, while chronically implanted, 16-channel Si-based probes provided a record of field potentials throughout the depth of vibrissa M1 cortex as well as vibrissa primary somatosensory (S1) cortex. The measured potentials were used to estimate the cu

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15

Hemelt, Marie E., Ernest E. Kwegyir-Afful, Randy M. Bruno, Daniel J. Simons, and Asaf Keller. "Consistency of Angular Tuning in the Rat Vibrissa System." Journal of Neurophysiology 104, no. 6 (2010): 3105–12. http://dx.doi.org/10.1152/jn.00697.2009.

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Each region along the rat mystacial vibrissa pathway contains neurons that respond preferentially to vibrissa deflections in a particular direction, a property called angular tuning. Angular tuning is normally defined using responses to deflections of the principal vibrissa, which evokes the largest response magnitude. However, neurons in most brain regions respond to multiple vibrissae and do not necessarily respond to different vibrissae with the same angular tuning. We tested the consistency of angular tuning across the receptive field in several stations along the vibrissa-to-cortex pathwa

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Hartmann, Mitra. "Vibrissa mechanical properties." Scholarpedia 10, no. 5 (2015): 6636. http://dx.doi.org/10.4249/scholarpedia.6636.

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Moore, Christopher I. "Frequency-Dependent Processing in the Vibrissa Sensory System." Journal of Neurophysiology 91, no. 6 (2004): 2390–99. http://dx.doi.org/10.1152/jn.00925.2003.

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The vibrissa sensory system is a key model for investigating principles of sensory processing. Specific frequency ranges of vibrissa motion, generated by rodent sensory behaviors (e.g., active exploration or resting) and by stimulus features, characterize perception by this system. During active exploration, rats typically sweep their vibrissae at ∼4–12 Hz against and over tactual surfaces, and during rest or quiescence, their vibrissae are typically still (<1 Hz). When a vibrissa is swept over an object, microgeometric surface features (e.g., grains on sandpaper) likely create higher frequ

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Hemelt, Marie E., and Asaf Keller. "Superior Colliculus Control of Vibrissa Movements." Journal of Neurophysiology 100, no. 3 (2008): 1245–54. http://dx.doi.org/10.1152/jn.90478.2008.

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This study tested the role of the superior colliculus in generating movements of the mystacial vibrissae—whisking. First, we compared the kinematics of whisking generated by the superior colliculus with those generated by the motor cortex. We found that in anesthetized rats, microstimulation of the colliculus evoked a sustained vibrissa protraction, whereas stimulation of motor cortex produced rhythmic protractions. Movements generated by the superior colliculus are independent of motor cortex and can be evoked at lower thresholds and shorter latencies than those generated by the motor cortex.

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ABDEL-WAHAB, MOHAMED A., E. B. GARETH JONES, FATEN A. ABDEL-AZIZ, and ALI H. BAHKALI. "Nia lenicarpa sp. nov. (Niaceae, Agaricales) from Red Sea mangroves in Saudi Arabia with comments on Nia vibrissa." Phytotaxa 406, no. 3 (2019): 157–68. http://dx.doi.org/10.11646/phytotaxa.406.3.2.

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An undescribed Nia species was recorded from intertidal decayed wood of Avicennia marina collected from Red Sea mangroves in Saudi Arabia. Nia lenicarpa sp. nov. is characterized by smooth basidiomes, growing singly or in groups of 2 to 10 confluent basidiomes, with a three-layered, thick peridium and 4-spored basidia. Nia lenicarpa differs from N. vibrissa by having smaller basidiomes without peridial hairs but with thick peridia, larger basidia and basidiospores. Phylogenetic analyses of SSU and LSU rDNA placed N. lenicarpa in a monophyletic clade with two N. vibrissa clades. There are no mo

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Jacquin, M. F., W. E. Renehan, R. D. Mooney, and R. W. Rhoades. "Structure-function relationships in rat medullary and cervical dorsal horns. I. Trigeminal primary afferents." Journal of Neurophysiology 55, no. 6 (1986): 1153–86. http://dx.doi.org/10.1152/jn.1986.55.6.1153.

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Intracellular recording and horseradish peroxidase (HRP) labeling were used to examine structure-function relationships in the medullary dorsal horn (MDH) and rostral cervical dorsal horn. In Nembutal-anesthetized rats, 78 trigeminal (V) primary afferent fibers were physiologically characterized and injected with HRP. Axons were sufficiently well stained to reconstruct all of their collaterals in the MDH. Many also extended into the cervical dorsal horn. Except for four axons, which responded best to noxious stimuli, all responded at short (mean = 0.50 ms) latencies to V ganglion shocks and to

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Armstrong-James, M., K. Fox, and A. Das-Gupta. "Flow of excitation within rat barrel cortex on striking a single vibrissa." Journal of Neurophysiology 68, no. 4 (1992): 1345–58. http://dx.doi.org/10.1152/jn.1992.68.4.1345.

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1. Extracellular spike recordings were made from single cells in various layers of barrel cortex in adult rats anesthetized with urethan. Response magnitude and latency differences to brief 1.14 degrees deflections of mystacial vibrissae of center (principal) and surround receptive-field vibrissae were measured. Latency differences for pairs of cells in the same penetration to stimulation of the principal vibrissa were also collected. In separate experiments the domains of layer IV cells were mapped for their influence by a single vibrissa and their latencies to this vibrissa were recorded. In

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Whiteley, Samuel J., Per M. Knutsen, David W. Matthews, and David Kleinfeld. "Deflection of a vibrissa leads to a gradient of strain across mechanoreceptors in a mystacial follicle." Journal of Neurophysiology 114, no. 1 (2015): 138–45. http://dx.doi.org/10.1152/jn.00179.2015.

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Rodents use their vibrissae to detect and discriminate tactile features during active exploration. The site of mechanical transduction in the vibrissa sensorimotor system is the follicle sinus complex and its associated vibrissa. We study the mechanics within the ring sinus (RS) of the follicle in an ex vivo preparation of the mouse mystacial pad. The sinus region has a relatively dense representation of Merkel mechanoreceptors and longitudinal lanceolate endings. Two-photon laser-scanning microscopy was used to visualize labeled cell nuclei in an ∼100-nl vol before and after passive deflectio

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Scharff, Moritz, Philipp Schorr, Tatiana Becker, Christian Resagk, Jorge H. Alencastre Miranda, and Carsten Behn. "An Artificial Vibrissa-Like Sensor for Detection of Flows." Sensors 19, no. 18 (2019): 3892. http://dx.doi.org/10.3390/s19183892.

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In nature, there are several examples of sophisticated sensory systems to sense flows, e.g., the vibrissae of mammals. Seals can detect the flow of their prey, and rats are able to perceive the flow of surrounding air. The vibrissae are arranged around muzzle of an animal. A vibrissa consists of two major components: a shaft (infector) and a follicle–sinus complex (receptor), whereby the base of the shaft is supported by the follicle-sinus complex. The vibrissa shaft collects and transmits stimuli, e.g., flows, while the follicle-sinus complex transduces them for further processing. Beside det

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Merker, L., C. Will, J. Steigenberger, and C. Behn. "Object Shape Recognition and Reconstruction Using Pivoted Tactile Sensors." Mathematical Problems in Engineering 2018 (June 26, 2018): 1–11. http://dx.doi.org/10.1155/2018/1613945.

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Many mammals use some special tactile hairs, the so-called mystacial macrovibrissae, to acquire information about their environment. In doing so, rats and mice, e.g., are able to detect object distances, shapes, and surface textures. Inspired by the biological paradigm, we present a mechanical model for object contour scanning and shape reconstruction, considering a single vibrissa as a cylindrically shaped Euler-Bernoulli-bending rod, which is pivoted by a bearing. In doing so, we adapt our model for a rotational scanning movement, which is in contrast to many previous modeling approaches. De

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Berg, Rune W., Beth Friedman, Lee F. Schroeder, and David Kleinfeld. "Activation of Nucleus Basalis Facilitates Cortical Control of a Brain Stem Motor Program." Journal of Neurophysiology 94, no. 1 (2005): 699–711. http://dx.doi.org/10.1152/jn.01125.2004.

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We tested the hypothesis that activation of nucleus basalis magnocellularis (NBM), which provides cholinergic input to cortex, facilitates motor control. Our measures of facilitation were changes in the direction and time-course of vibrissa movements that are elicited by microstimulation of vibrissa motor (M1) cortex. In particular, microstimulation led solely to a transient retraction of the vibrissae in the sessile animal but to a full motion sequence of protraction followed by retraction in the aroused animal. We observed that activation of NBM, as assayed by cortical desynchronization, ind

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Jones, Michael S., and Daniel S. Barth. "Spatiotemporal Organization of Fast (>200 Hz) Electrical Oscillations in Rat Vibrissa/Barrel Cortex." Journal of Neurophysiology 82, no. 3 (1999): 1599–609. http://dx.doi.org/10.1152/jn.1999.82.3.1599.

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A 64-channel electrode array was used to study the spatial and temporal characteristics of fast (>200 Hz) electrical oscillations recorded from the surface of rat cortex in both awake and anesthetized animals. Transient vibrissal displacements were effective in evoking oscillatory responses in the vibrissa/barrel field and were tightly time-locked to stimulus onset, coinciding with the earliest temporal components of the coincident slow-wave response. Vibrissa-evoked fast oscillations exhibited modality specificity and were earliest and of largest amplitude over the cortical barrel, which c

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Kang, Jung-Il, Sang-Cheol Kim, Jae-Hee Hyun, et al. "Effect of Orostachys iwarenge Hara on the proliferation of dermal papilla ceIls." Journal of Medicine and Life Science 7, no. 1 (2010): 139–42. http://dx.doi.org/10.22730/jmls.2010.7.1.139.

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In this study, we investigated the hair-growth effect ofplants growing in Jeju by the proliferation of dermal papilla cells. Dermal papilla cells are specialized mesenchymal cells that located at the bulb region of hair follicles. The cells play crucial roles in hair formation, growth, and cycling. When immortalized vibrissa dermal papilla cells were treated with several extracts, the extract of Orostachys iwarenge Hara increased proliferation of immortalized vibrissa dermal papilla cells. These results suggest that O. iwarenge extract has the potential to promote hair growth via the prolifera

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Jahoda, C. A. "Induction of follicle formation and hair growth by vibrissa dermal papillae implanted into rat ear wounds: vibrissa-type fibres are specified." Development 115, no. 4 (1992): 1103–9. http://dx.doi.org/10.1242/dev.115.4.1103.

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Adult vibrissa follicle dermal papillae have the capacity to induce hair growth and follicle formation when associated with epidermis from various sources. However, the range of conditions under which hair follicle induction will take place has not been established. The question of whether or not the adult papilla carries information to impose fibre-type specificity has also not been fully answered. This study describes how the implantation of isolated papillae into small incisional cuts on the rat ear pinna resulted in the subsequent emergence of abnormally large hair fibres from the wound si

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Tuthill, John C. "What's on the vibrissa abscissa?" Journal of Experimental Biology 219, no. 21 (2016): 3312.2–3313. http://dx.doi.org/10.1242/jeb.130336.

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Andermann, Mark L., Jason Ritt, Maria A. Neimark, and Christopher I. Moore. "Neural Correlates of Vibrissa Resonance." Neuron 42, no. 3 (2004): 451–63. http://dx.doi.org/10.1016/s0896-6273(04)00198-9.

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Montemurro, Marcelo A., Stefano Panzeri, Miguel Maravall, et al. "Role of Precise Spike Timing in Coding of Dynamic Vibrissa Stimuli in Somatosensory Thalamus." Journal of Neurophysiology 98, no. 4 (2007): 1871–82. http://dx.doi.org/10.1152/jn.00593.2007.

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Rats discriminate texture by whisking their vibrissae across the surfaces of objects. This process induces corresponding vibrissa vibrations, which must be accurately represented by neurons in the somatosensory pathway. In this study, we investigated the neural code for vibrissa motion in the ventroposterior medial (VPm) nucleus of the thalamus by single-unit recording. We found that neurons conveyed a great deal of information (up to 77.9 bits/s) about vibrissa dynamics. The key was precise spike timing, which typically varied by less than a millisecond from trial to trial. The neural code wa

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Pisansarakit, P., and G. P. M. Moore. "Induction of hair follicles in mouse skin by rat vibrissa dermal papillae." Development 94, no. 1 (1986): 113–19. http://dx.doi.org/10.1242/dev.94.1.113.

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Rat vibrissa dermal papillae were transplanted between the epidermis and dermis of isolated embryonic mouse skin and then grafted onto nude mice. The papillae induced the formation of hair follicles which were larger than those of the host skin but smaller than vibrissa follicles. The potential of isolated dermal papillae to induce follicles with characteristics of those from which the papillae originated is discussed. One of the major factors affecting the sizes of induced follicles may have been related to the splitting of the papilla mass and dispersal of the cells by invading cords of epid

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Kwan, C. L., J. A. Demaro, J. W. Hu, M. F. Jacquin, and B. J. Sessle. "C-Fiber Depletion Alters Response Properties of Neurons in Trigeminal Nucleus Principalis." Journal of Neurophysiology 81, no. 2 (1999): 435–46. http://dx.doi.org/10.1152/jn.1999.81.2.435.

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Kwan, C. L., J. A. Demaro, J. W. Hu, M. F. Jacquin, and B. J. Sessle. C-fiber depletion alters response properties of neurons in trigeminal nucleus principalis. J. Neurophysiol. 81: 435–446, 1999. The effects of C-fiber depletion induced by neonatal capsaicin treatment on the functional properties of vibrissa-sensitive low-threshold mechanoreceptive (LTM) neurons in the rat trigeminal nucleus principalis were examined in adult rats. Neonatal rats were injected either with capsaicin or its vehicle within 48 h of birth. The depletion of unmyelinated afferents was confirmed by the significant dec

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Kang, Jung-Il, Sang-Cheol Kim, Min-Kyoung Kim, et al. "Effect of Hizkia fusiforme Okamura on the proliferation of dermal papilla celIs." Journal of Medicine and Life Science 8, no. 1 (2011): 16–20. http://dx.doi.org/10.22730/jmls.2011.8.1.16.

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This study was conducted to evaluate the hair-growth effects of seaweeds in Jeju by the proliferation of dermal papilla cells. Dermal papilla cells are mesenchymally-derived cells which play a pivotal role in the morphogenesis, regeneration, and growth of hair. Immortalized vibrissa dermal papilla cells were treated with algae extracts such as extract of Hizkia fusiform Okamura, extract of Padina arborescens Holmes, extract of Sargassum thunbergil, extract of Gelidium amansii, and extract of Grateloupia turuturu Yamada. Among them, the extract of H. fusiforme significantly increased proliferat

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Klein, Bradley G., Wilfred C. Mccain, and Marion Ehrich. "Morphometric Analysis of Rat Trigeminal Ganglion Cells and Their Vibrissa Follicle Nerve Axons Following Multiple Low-Dose Exposure to the Carbamate Insecticide Aldicarb." Journal of the American College of Toxicology 10, no. 5 (1991): 555–68. http://dx.doi.org/10.3109/10915819109078652.

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Chronic carbamate exposure is reported to cause somatosensory dysfunction in humans. The limited experimental literature on neuropathic effects of repeated, low-level carbamate exposure is equivocal and does not address effects on well-defined somatosensory pathways. In this study, adult Sprague-Dawley rats were given 0.2 mg/kg/day of aldicarb, by oral gavage, for 90–114 days. The daily dose was below that capable of inducing clinical signs of cholinergic poisoning but inhibited acetylcholinesterase in spinal cord and blood. Aldicarb was evaluated for its ability to cause death or morphologic

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Friedman, Wendy A., H. Philip Zeigler, and Asaf Keller. "Vibrissae motor cortex unit activity during whisking." Journal of Neurophysiology 107, no. 2 (2012): 551–63. http://dx.doi.org/10.1152/jn.01132.2010.

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Rats generate stereotyped exploratory (5–12 Hz) vibrissa movements when navigating through their environment. Like other rhythmic behaviors, the production of whisking relies on a subcortical pattern generator. However, the relatively large vibrissae representation in motor cortex (vMCx) suggests that cortex also contributes to the control of whisker movements. The goal of this study was to examine the relationship between neuronal activity in vMCx and the kinematics of vibrissae movements. We recorded multiunit activity (MUA) and single units in the rhythmic region of vMCx while measuring vib

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Staples, David A. "Labrumoides vibrissa (Arthropoda: Pycnogonida), new callipallenid genus and new species from north Western Australia." Zootaxa 4751, no. 3 (2020): 575–81. https://doi.org/10.11646/zootaxa.4751.3.9.

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Staples, David A. (2020): Labrumoides vibrissa (Arthropoda: Pycnogonida), new callipallenid genus and new species from north Western Australia. Zootaxa 4751 (3): 575-581, DOI: 10.11646/zootaxa.4751.3.9

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Kang, Jung-Il, Youri Kim, Haeri Kim, Eun-Sook Yoo, and Hee-Kyoung Kang. "The Effect of Umbraulva japonica on the Stimulation of Anagen Phase." Yakhak Hoeji 67, no. 3 (2023): 182–88. http://dx.doi.org/10.17480/psk.2023.67.3.182.

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This study was conducted to evaluate the effects of Umbraulva japonica extract on the hair growth. Treatment with U. Japonica extract significantly increased the proliferation of dermal papilla cells (DPCs), a central regulator of the hair cycle. When isolated rat vibrissa follicles were treated with U. Japonica extract for 21 d, the hair-fiber lengths of the vibrissa follicles increased. When examined the activity of 5α-reductase, which converts testosterone to dihydrotestosterone (DHT), a main cause of androgenetic alopecia, U. Japonica extract did not inhibit the 5α-reductase activity. More

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Kossut, Małgorzata, and Ewa Siucińska. "Overlap of sensory representations in rat barrel cortex after neonatal vibrissectomy." Acta Neurobiologiae Experimentalis 56, no. 2 (1996): 499–505. http://dx.doi.org/10.55782/ane-1996-1153.

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Cortical representation of the common fur of mystacial pad is situated outside postero-medial barrel subfield (PMBSF) in rat primary somatosensory cortex. Following neonatal vibrissectomy, stimulation of the common fur activates the neurones in PMBSF. We examined if sparing of one mystacial vibrissa from the neonatal ablation, which results in a very extensive increase of its cortical representation, would prevent the invasion of the common fur inputs into the PMBSF. The cortical representations were mapped with 2-deoxyglucose (2DG). It was found that six weeks after neonatal vibrissectomy spa

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Merker, Lukas, Sebastian J. Fischer Calderon, Moritz Scharff, Jorge H. Alencastre Miranda, and Carsten Behn. "Effects of Multi-Point Contacts during Object Contour Scanning Using a Biologically-Inspired Tactile Sensor." Sensors 20, no. 7 (2020): 2077. http://dx.doi.org/10.3390/s20072077.

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Vibrissae are an important tactile sense organ of many mammals, in particular rodents like rats and mice. For instance, these animals use them in order to detect different object features, e.g., object-distances and -shapes. In engineering, vibrissae have long been established as a natural paragon for developing tactile sensors. So far, having object shape scanning and reconstruction in mind, almost all mechanical vibrissa models are restricted to contact scenarios with a single discrete contact force. Here, we deal with the effect of multi-point contacts in a specific scanning scenario, where

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Cramer, Nathan P., Ying Li, and Asaf Keller. "The Whisking Rhythm Generator: A Novel Mammalian Network for the Generation of Movement." Journal of Neurophysiology 97, no. 3 (2007): 2148–58. http://dx.doi.org/10.1152/jn.01187.2006.

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Using the rat vibrissa system, we provide evidence for a novel mechanism for the generation of movement. Like other central pattern generators (CPGs) that underlie many movements, the rhythm generator for whisking can operate without cortical inputs or sensory feedback. However, unlike conventional mammalian CPGs, vibrissa motoneurons (vMNs) actively participate in the rhythmogenesis by converting tonic serotonergic inputs into the patterned motor output responsible for movement of the vibrissae. We find that, in vitro, a serotonin receptor agonist, α-Me-5HT, facilitates a persistent inward cu

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Webber, Roxanna M., and Garrett B. Stanley. "Transient and Steady-State Dynamics of Cortical Adaptation." Journal of Neurophysiology 95, no. 5 (2006): 2923–32. http://dx.doi.org/10.1152/jn.01188.2005.

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Adaptation is a ubiquitous property of all sensory pathways of the brain and thus likely critical in the encoding of behaviorally relevant sensory information. Despite evidence identifying specific biophysical mechanisms contributing to sensory adaptation, its functional role in sensory encoding is not well understood, particularly in the natural environment where transient rather than steady-state activity could dominate the neuronal representation. Here, we show that the heterogeneous transient and steady-state adaptation dynamics of single cortical neurons in the rat vibrissa system were we

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Cramer, Nathan P., and Asaf Keller. "Cortical Control of a Whisking Central Pattern Generator." Journal of Neurophysiology 96, no. 1 (2006): 209–17. http://dx.doi.org/10.1152/jn.00071.2006.

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Whether the motor cortex regulates voluntary movements by generating the motor pattern directly or by acting through subcortical central pattern generators (CPGs) remains a central question in motor control. Using the rat whisker system, an important model system of mammalian motor control, we develop an anesthetized preparation to investigate the interaction between the motor cortex and a whisking CPG. Using this model we investigate the involvement of a serotonergic component of the whisking CPG in determining whisking kinematics and the mechanisms through which drive from the CPG is convert

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Rhoades, R. W., G. R. Belford, and H. P. Killackey. "Receptive-field properties of rat ventral posterior medial neurons before and after selective kainic acid lesions of the trigeminal brain stem complex." Journal of Neurophysiology 57, no. 5 (1987): 1577–600. http://dx.doi.org/10.1152/jn.1987.57.5.1577.

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Single neurons were recorded from the ventral posteromedial thalamic nucleus (VPM) of urethan-anesthetized rats. Six of these animals were intact, 28 sustained kainic acid (KA) lesions of trigeminal nucleus principalis (PrV), and 9 received similar lesions of trigeminal subnucleus interpolaris (SpVi). Four animals sustained PrV lesions that were followed, at an interval of 1-3 mo, by KA injections into SpVi. Special attention was paid to the receptive-field characteristics of neurons that were sensitive to deflection of the mystacial vibrissae. In normal animals, we recorded a total of 167 VPM

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Knutsen, Per M., Celine Mateo, and David Kleinfeld. "Precision mapping of the vibrissa representation within murine primary somatosensory cortex." Philosophical Transactions of the Royal Society B: Biological Sciences 371, no. 1705 (2016): 20150351. http://dx.doi.org/10.1098/rstb.2015.0351.

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The ability to form an accurate map of sensory input to the brain is an essential aspect of interpreting functional brain signals. Here, we consider the somatotopic map of vibrissa-based touch in the primary somatosensory (vS1) cortex of mice. The vibrissae are represented by a Manhattan-like grid of columnar structures that are separated by inter-digitating septa. The development, dynamics and plasticity of this organization is widely used as a model system. Yet, the exact anatomical position of this organization within the vS1 cortex varies between individual mice. Targeting of a particular

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Benison, Alexander M., Tyler D. Ard, Allison M. Crosby, and Daniel S. Barth. "Temporal Patterns of Field Potentials in Vibrissa/Barrel Cortex Reveal Stimulus Orientation and Shape." Journal of Neurophysiology 95, no. 4 (2006): 2242–51. http://dx.doi.org/10.1152/jn.01034.2005.

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During environmental exploration, rats rhythmically whisk their vibrissae along the rostrocaudal axis. Each forward extension of the vibrissa array establishes rapid spatiotemporal contact with an object under investigation. This contact presumably produces equally rapid spatiotemporal patterns of population responses in the vibrissa representation of somatosensory cortex [the posterior medial barrel subfield (PMBSF)] reflecting features of a stimulus. We used extracellular mapping to identify object features based on spatiotemporal patterns of evoked potentials. Spatiotemporal modeling of evo

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Hawking, Thomas G., and Todor V. Gerdjikov. "Populations of striatal medium spiny neurons encode vibrotactile frequency in rats: modulation by slow wave oscillations." Journal of Neurophysiology 109, no. 2 (2013): 315–20. http://dx.doi.org/10.1152/jn.00489.2012.

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Dorsolateral striatum (DLS) is implicated in tactile perception and receives strong projections from somatosensory cortex. However, the sensory representations encoded by striatal projection neurons are not well understood. Here we characterized the contribution of DLS to the encoding of vibrotactile information in rats by assessing striatal responses to precise frequency stimuli delivered to a single vibrissa. We applied stimuli in a frequency range (45–90 Hz) that evokes discriminable percepts and carries most of the power of vibrissa vibration elicited by a range of complex fine textures. B

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Binder, Manfred, David S. Hibbett, and Hans P. Molitoris. "Phylogenetic relationships of the marine gasteromyceteNia vibrissa." Mycologia 93, no. 4 (2001): 679–88. http://dx.doi.org/10.1080/00275514.2001.12063199.

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Hamada, Chika Hanzawa, Akihiro Ishino, and Masahiro Tajima. "190 Hair cycle of mouse vibrissa follicles." Journal of Dermatological Science 15, no. 2 (1997): 134. http://dx.doi.org/10.1016/s0923-1811(97)81889-0.

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Jones, A. M., and E. B. G. Jones. "Observations on the marine gasteromycete Nia vibrissa." Mycological Research 97, no. 1 (1993): 1–6. http://dx.doi.org/10.1016/s0953-7562(09)81104-0.

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