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Articoli di riviste sul tema "Visual evoked response"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 28 luglio 2024

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1

Vaughan, Herbert G., and Robert Katzman†. "EVOKED RESPONSE IN VISUAL DISORDERS*." Annals of the New York Academy of Sciences 112, no. 1 (December 16, 2006): 305–19. http://dx.doi.org/10.1111/j.1749-6632.1964.tb26759.x.

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2

Douthwaite, W. A., and T. C. A. Jenkins. "VISUAL ACUITY PREDICTION USING THE VISUAL EVOKED RESPONSE." Ophthalmic and Physiological Optics 7, no. 4 (October 1987): 421–24. http://dx.doi.org/10.1111/j.1475-1313.1987.tb00772.x.

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3

JENSEN, OLE LUND, and ERIK KROGH. "VISUAL EVOKED RESPONSE AND ALCOHOL INTOXICATION." Acta Ophthalmologica 62, no. 4 (May 27, 2009): 651–57. http://dx.doi.org/10.1111/j.1755-3768.1984.tb03978.x.

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4

Vasile, Russell G., Frank H. Duffy, Gloria McAnulty, David Bear, John J. Mooney, Kerry Bloomingdale, Leslie K. Serchuck, and Joseph J. Schildkraut. "Abnormal visual evoked response in melancholia." Biological Psychiatry 25, no. 6 (March 1989): 785–88. http://dx.doi.org/10.1016/0006-3223(89)90250-3.

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5

Katsumi, Osamu, Mehul C. Mehta, Elizabeth W. Larson-Park, Charlene J. Skladzien, and Tatsuo Hirose. "Pattern reversal visual evoked response and Snellen visual acuity." Graefe's Archive for Clinical and Experimental Ophthalmology 232, no. 5 (May 1994): 272–78. http://dx.doi.org/10.1007/bf00194476.

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6

Kerty, Emilia, Nils Eide, and Ola Skjeldal. "Visual evoked response in Syphilitic optic atrophy." Acta Ophthalmologica 64, no. 5 (May 27, 2009): 553–56. http://dx.doi.org/10.1111/j.1755-3768.1986.tb06972.x.

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7

Granet, David B., Richard W. Hertle, Graham E. Quinn, and Michael E. Breton. "The Visual-evoked Response in Infants With Central Visual Impairment." American Journal of Ophthalmology 116, no. 4 (October 1993): 437–43. http://dx.doi.org/10.1016/s0002-9394(14)71401-1.

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8

Sanders, E. A., A. C. Volkers, J. C. van der Poel, and G. H. van Lith. "Visual function and pattern visual evoked response in optic neuritis." British Journal of Ophthalmology 71, no. 8 (August 1, 1987): 602–8. http://dx.doi.org/10.1136/bjo.71.8.602.

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9

Sedwick, Lyn A. "The Visual-Evoked Response in Infants With Central Visual Impairment." Journal of Neuro-Ophthalmology 14, no. 1 (March 1994): 63. http://dx.doi.org/10.1097/00041327-199403000-00035.

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10

Soelberg Sørensen, P., W. Trojaborg, F. Gjerris, and B. Krogsaa. "Delayed visual evoked response in benign intracranial hypertension." Acta Neurologica Scandinavica 69, S98 (January 29, 2009): 389–90. http://dx.doi.org/10.1111/j.1600-0404.1984.tb02533.x.

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11

Douthwaite, W. A., and T. C. A. Jenkins. "Amplitude variability of the transient visual evoked response." Ophthalmic and Physiological Optics 8, no. 2 (April 1988): 221–26. http://dx.doi.org/10.1111/j.1475-1313.1988.tb01041.x.

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12

Baseler, H. A., E. E. Sutter, S. A. Klein, and T. Carney. "The topography of visual evoked response properties across the visual field." Electroencephalography and Clinical Neurophysiology 90, no. 1 (January 1994): 65–81. http://dx.doi.org/10.1016/0013-4694(94)90114-7.

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13

RUDVIN, INGER, ARNE VALBERG, and BJØRG ELISABETH KILAVIK. "Visual evoked potentials and magnocellular and parvocellular segregation." Visual Neuroscience 17, no. 4 (July 2000): 579–90. http://dx.doi.org/10.1017/s0952523800174085.

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Abstract (sommario):

We have measured visual evoked potentials (VEPs) to luminance-modulated, square-wave alternating, 3-deg homogeneous disks for stimulus frequencies ranging from 1 Hz to 16.7 Hz. The aim of the study was to determine the range of frequencies at which we could reproduce the two-branched contrast-response (C-R) curves we had seen at 1 Hz (Valberg & Rudvin, 1997) and which we interpreted as magnocellular (MC) and parvocellular (PC) segregation. Low-contrast stimuli elicited relatively simple responses to luminance increments resulting in waveforms that may be the signatures of inputs from magno

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14

Gareau, P. J., J. S. Gati, R. S. Menon, D. Lee, G. Rice, J. R. Mitchell, P. Mandelfino, and S. J. Karlik. "Reduced visual evoked responses in multiple sclerosis patients with optic neuritis: Comparison of functional magnetic resonance imaging and visual evoked potentials." Multiple Sclerosis Journal 5, no. 3 (June 1999): 161–64. http://dx.doi.org/10.1177/135245859900500304.

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The limited application of functional magnetic resonance imaging (fMRI) for investigations of multiple sclerosis (MS) patients has already shown that deficits of the motor, cognitive and visual systems may be identified by differences in the patterns of activation in response to a suitable stimulus. In MS patients with unilateral optic neuritis, the area of activation in the primary visual cortex, measured by fMRI techniques, is dramatically reduced in response to stimulation of the affected eye. The latency of the major positive component of the visual evoked potential (VEP) recorded upon sti

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15

Kobayashi, Misa, and Makoto Ichikawa. "Emotional response evoked by viewing facial expression pictures leads to higher temporal resolution." i-Perception 14, no. 1 (January 2023): 204166952311521. http://dx.doi.org/10.1177/20416695231152144.

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We examined the effects of emotional response, with different levels of valence and arousal, on the temporal resolution of visual processing by using photos of various facial expressions. As an index of the temporal resolution of visual processing, we measured the minimum lengths of the noticeable durations for desaturated photographs using the method of constant stimuli by switching colorful facial expression photographs to desaturated versions of the same photographs. Experiments 1 and 2 used facial photographs that evoke various degrees of arousal and valence. Those photographs were prepare

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16

Alani, Shakir M. "Pattern-reversal visual evoked potentials in patients with hydrocephalus." Journal of Neurosurgery 62, no. 2 (February 1985): 234–37. http://dx.doi.org/10.3171/jns.1985.62.2.0234.

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✓ Pattern-reversal visual evoked potentials (VEP's) in response to whole- and half-field stimulation were studied in 10 patients with hydrocephalus. Abnormalities consistent with optic nerve dysfunction were recorded in four patients. Two patients had response asymmetry to half-field stimulation, which suggested dysfunction of the visual pathway in the right hemisphere. The remaining four patients had normal responses. Measurement of VEP's was repeated after the surgical treatment of hydrocephalus in four patients, and showed marked improvement in two of the three patients with preoperative ab

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17

Shelepin, Y. E., A. K. Harauzov, N. N. Krasilnikov, and S. V. Pronin. "Visual Evoked Potentials to Gratings and Noise." Perception 26, no. 1_suppl (August 1997): 355. http://dx.doi.org/10.1068/v970270.

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Visual evoked potentials were recorded in a study of the spatial-frequency characteristics of the human visual system. Stimuli were gratings with and without superposition of white noise. Evoked potentials were recorded in normal subjects from different areas of the occipital cortex, from the temporal and parietal lobes, according to the ‘ten-twenty’ electrode system. A set of black-and-white sine-wave gratings was used with eight different spatial frequencies in the range 0.45 to 14.4 cycles deg−1. The gratings were presented with binary quasi-white noise or with a uniform grey field with mea

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18

MADDESS, TED, ANDREW C. JAMES, RASA RUSECKAITE, and ELIZABETH A. BOWMAN. "Hierarchical decomposition of dichoptic multifocal visual evoked potentials." Visual Neuroscience 23, no. 5 (September 2006): 703–12. http://dx.doi.org/10.1017/s0952523806230013.

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Visual evoked responses to dichoptically presented multifocal stimuli were recorded for 92 eyes. Two stimulus variants were explored: temporally sparse and rapidly contrast reversing. We used hierarchal decomposition (HD) to represent the multifocal responses in terms of a small number of potentially unique component waveforms that are interrelated in a multivariate linear autoregressive (MLAR) relationship. The HD method exploits temporal correlations over a range of delays in the responses to estimate parallel, feedforward and feedback relationships between the HD components. Three HD compon

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19

Hülsdünker, Thorben, Martin Ostermann, and Andreas Mierau. "Motion-Onset Visual Potentials Evoked in a Sport-Specific Visuomotor Reaction Task." Journal of Sport and Exercise Psychology 42, no. 4 (August 1, 2020): 280–91. http://dx.doi.org/10.1123/jsep.2019-0255.

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Although neural visual processes play a crucial role in sport, experiments have been restricted to laboratory conditions lacking ecological validity. Therefore, this study examined the feasibility of measuring visual evoked potentials in a sport-specific visuomotor task. A total of 18 international elite young table tennis athletes (mean age 12.5 years) performed a computer-based and a sport-specific visuomotor reaction task in response to radial motion-onset stimuli on a computer screen and table tennis balls played by a ball machine, respectively. A 64-channel electroencephalography system i

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20

Kothari, Ruchi, Ramji Singh, Smita Singh, and Benhur Premendran. "Abnormal pattern visual evoked response in carotid-cavernous fistula." Journal of Neurosciences in Rural Practice 04, S 01 (December 2013): S143—S145. http://dx.doi.org/10.4103/0976-3147.116474.

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21

Julsrud, O. J. "VER (VISUAL EVOKED RESPONSE) IN EXAMINATION OF MS PATIENTS." Acta Neurologica Scandinavica 69, S98 (January 29, 2009): 376–77. http://dx.doi.org/10.1111/j.1600-0404.1984.tb02526.x.

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22

Kogai, Takayoshi, Atsushi Aoyama, Kaoru Amano, and Tsunehiro Takeda. "Visual mismatch response evoked by a perceptually indistinguishable oddball." NeuroReport 22, no. 11 (August 2011): 535–38. http://dx.doi.org/10.1097/wnr.0b013e328348ab76.

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23

O'Neill, D., M. Rowan, D. Abraham, J. Feely, J. B. Walsh, and D. Ccakley. "The Flash Visual Evoked Response and Alzheimer-Type Dementia." Age and Ageing 19, suppl 2 (January 1, 1990): P3. http://dx.doi.org/10.1093/ageing/19.suppl_2.p3-b.

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24

Jones, D. C., and W. T. Blume. "CENTRAL AND PERIPHERAL VISUAL FIELD PATTERN EVOKED RESPONSE LATENCIES." Journal of Clinical Neurophysiology 13, no. 5 (September 1996): 449. http://dx.doi.org/10.1097/00004691-199609000-00063.

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25

Katzman, Robert. "THE VALIDITY OF THE VISUAL EVOKED RESPONSE IN MAN." Annals of the New York Academy of Sciences 112, no. 1 (December 16, 2006): 238–40. http://dx.doi.org/10.1111/j.1749-6632.1964.tb26753.x.

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26

FAGAN, JOHN E., and ROBERT L. YOLTON. "Theoretical Reliability of Visual Evoked Response-Based Acuity Determinations." Optometry and Vision Science 62, no. 2 (February 1985): 95–99. http://dx.doi.org/10.1097/00006324-198502000-00005.

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27

DOUTHWAITE, WILLIAM ARTHUR, and HEATHER CONNOR. "Mental Concentration and the Pattern Reversal Visual Evoked Response." Optometry and Vision Science 66, no. 1 (January 1989): 61–65. http://dx.doi.org/10.1097/00006324-198901000-00016.

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28

Moore, NC, CA Stewart, KM Estes, NM Khairy, PR Lindsey, RL Vogel, and KL Coburn. "Flash-visual-evoked-response delay is associated with aging." European Neuropsychopharmacology 6 (June 1996): 250. http://dx.doi.org/10.1016/0924-977x(96)88401-x.

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29

Gupta, N., N. Verma, M. Guidice, and K. Kooi. "Visual evoked response in head trauma: pattern-shift stimulus." Neurology 36, no. 4 (April 1, 1986): 578–81. http://dx.doi.org/10.1212/wnl.36.4.578.

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30

Morrison, J. D., and J. Reilly. "THE PATTERN VISUAL EVOKED CORTICAL RESPONSE IN HUMAN AGEING." Quarterly Journal of Experimental Physiology 74, no. 3 (May 16, 1989): 311–28. http://dx.doi.org/10.1113/expphysiol.1989.sp003274.

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31

Chen, Shu Li, Zhi Zhong Wang, Li Shi, and Xiao Ke Niu. "Analysis of Visual-Evoked Potentials of Primary Visual Cortex under Flash Stimulations." Advanced Materials Research 749 (August 2013): 328–32. http://dx.doi.org/10.4028/www.scientific.net/amr.749.328.

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Abstract (sommario):

Visual-evoked potentials (VEPs) which is made up of electrical signals generated by the nervous system in response to a stimulus can be easily recorded from the visual cortex of the experiment animal. There are several types of VEPs, for example, flash evoked potential (FEP), pattern evoked potential [1-3]. The FEP is produced by a visual stimulation with a brief and diffuse flash light. It is frequently used to evaluate the neural activity and sensory processing in the visual system [ and to identify and characterize the changes occurring in the retina and the occipital cortex [4, 5]. VEPs ca

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32

Herzon, Garrett D., and David L. Zealear. "Intraoperative Monitoring of the Visual Evoked Potential during Endoscopic Sinus Surgery." Otolaryngology–Head and Neck Surgery 111, no. 5 (November 1994): 575–79. http://dx.doi.org/10.1177/019459989411100507.

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Iatrogenic blindness resulting from conventional and endoscopic sinus surgery continues to be a major concern to the head and neck surgeon. A new electrophysiologic monitoring technique has been developed that can help avoid damage to the optic nerve and visual system. The approach involves monitoring the visual evoked potential with presentation of flash stimuli to the eyes. Thirty patients with chronic sinusitis underwent endoscopic sinus surgery with visual evoked potential monitoring. The procedures were carried out with patients under intravenous general anesthesia. Needle cortical electr

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33

Ariel, Michael, and Naoki Kogo. "Shunting Inhibition in Accessory Optic System Neurons." Journal of Neurophysiology 93, no. 4 (April 2005): 1959–69. http://dx.doi.org/10.1152/jn.00214.2004.

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The interaction of excitatory and inhibitory inputs to the accessory optic system was studied with whole cell recordings in the turtle basal optic nucleus. Previous studies have shown that visual patterns, drifting in the same preferred direction, evoke excitatory and inhibitory postsynaptic events simultaneously. Analysis of the reversal potentials for these events and their pharmacological profile suggest that they are mediated by AMPA and GABAA receptors, respectively. Here, neurons were recorded to study nonlinear interaction between excitatory and inhibitory responses evoked by electrical

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34

Tejada, Pilar Herreros De, Daniel G. Green, and Carmen Muñoz Tedó. "Visual thresholds in albino and pigmented rats." Visual Neuroscience 9, no. 3-4 (October 1992): 409–14. http://dx.doi.org/10.1017/s0952523800010816.

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AbstractAlbino rats have recently been reported to have increment thresholds against dim backgrounds that are two log units higher than those of pigmented rats. We, on the other hand, have failed to confirm these differences using electroretinogram b waves and pupillary light reflexes. This paper reports on experiments using evoked potentials from cortex and colliculus and single-unit recordings from colliculus.We recorded visual-evoked potentials from cortex and superior colliculus in the strains of albino (CD) and pigmented (Long-Evans) rats used in the earlier studies. Thresholds were deter

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35

Makeig, Scott, Marissa Westerfield, Jeanne Townsend, Tzyy-Ping Jung, Eric Courchesne, and Terrence J. Sejnowski. "Functionally independent components of early event-related potentials in a visual spatial attention task." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 354, no. 1387 (July 29, 1999): 1135–44. http://dx.doi.org/10.1098/rstb.1999.0469.

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Spatial visual attention modulates the first negative–going deflection in the human averaged event–related potential (ERP) in response to visual target and non–target stimuli (the N1 complex). Here we demonstrate a decomposition of N1 into functionally independent subcomponents with functionally distinct relations to task and stimulus conditions. ERPs were collected from 20 subjects in response to visual target and non–target stimuli presented at five attended and non–attended screen locations. Independent component analysis, a new method for blind source separation, was trained simultaneously

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36

Cone-Wesson, Barbara, Richard C. Dowell, Dani Tomlin, Gary Rance, and Wu Jia Ming. "The Auditory Steady-State Response: Comparisons with the Auditory Brainstem Response." Journal of the American Academy of Audiology 13, no. 04 (April 2002): 173–87. http://dx.doi.org/10.1055/s-0040-1715962.

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Two studies are reported in which the threshold estimates from auditory steady-state response (ASSR) tests are compared to those of click- or toneburst-evoked auditory brainstem responses (ABRs). The first, a retrospective review of 51 cases, demonstrated that both the click-evoked ABR and the ASSR threshold estimates in infants and children could be used to predict the pure-tone threshold. The second, a prospective study of normal-hearing adults, provided evidence that the toneburst-evoked ABR and the modulated tone–evoked ASSR thresholds were similar when both were detected with an automatic

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37

Miyata, Mayumi, Osamu Katsumi, Megumi Oikawa, Junko Ito, Yoshitaka Miyanaga, and Jiro Inouye. "Trial of Pattern Reversal Visual Evoked Response in Patients with Visual Conversion Reaction." JAPANESE ORTHOPTIC JOURNAL 36 (2007): 103–11. http://dx.doi.org/10.4263/jorthoptic.36.103.

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38

Ohn, Young-Hoon, Osamu Katsumi, Yoshie Matsui, Hitomi Tetsuka, and Tatsuo Hirose. "Snellen Visual Acuity versus Pattern Reversal Visual-Evoked Response Acuity in Clinical Applications." Ophthalmic Research 26, no. 4 (1994): 240–52. http://dx.doi.org/10.1159/000267482.

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39

KORTH, MATTHIAS, RAINER RIX, and OTTO SEMBRITZKI. "The sequential processing of visual motion in the human electroretinogram and visual evoked potential." Visual Neuroscience 17, no. 4 (July 2000): 631–46. http://dx.doi.org/10.1017/s0952523800174127.

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Mechanisms of motion vision in the human have been studied extensively by psychophysical methods but less frequently by electrophysiological techniques. It is the purpose of the present investigation to study electrical potentials of the eye (electroretinogram, ERG) and of the brain (visual evoked potential, VEP) in response to moving regular square-wave stripe patterns spanning a wide range of contrasts, spatial frequencies, and speeds. The results show that ERG amplitudes increase linearly with contrast while VEPs, in agreement with the literature, show an amplitude saturation at low contras

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40

Huang, X., R. D. Mooney, and R. W. Rhoades. "Effects of serotonin on retinotectal-, corticotectal-, and glutamate-induced activity in the superior colliculus of the hamster." Journal of Neurophysiology 70, no. 2 (August 1, 1993): 723–32. http://dx.doi.org/10.1152/jn.1993.70.2.723.

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1. Single-unit recording and iontophoretic techniques were used to test the effects of serotonin (5-HT) on the responses of neurons in the superficial layers (the stratum griseum superficiale and stratum opticum) of the hamster's superior colliculus (SC). 2. Iontophoresis of 5-HT produced a visual response suppression of 40% or greater in 78.1% (n = 50) of 64 neurons tested. 5-HT did not augment the visual responses of any of the cells tested. The average response suppression was 75.3 +/- 21.2% (mean +/- S.D.). 3. Iontophoresis of 5-HT had significantly different effects on activation of SC ce

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41

ZHANG, YI, RICHARD D. MOONEY, and ROBERT W. RHOADES. "Effects of norepinephrine on the activity of visual neurons in the superior colliculus of the hamster." Visual Neuroscience 16, no. 3 (May 1999): 541–55. http://dx.doi.org/10.1017/s0952523899163144.

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Single-unit recording and micropressure ejection techniques were used to test the effects of norepinephrine (NE) on the responses of neurons in the superficial layers (the stratum griseum superficiale and stratum opticum) of the hamster's superior colliculus (SC). Application of NE suppressed visually evoked responses by ≥30% in 75% of 40 neurons tested and produced ≥30% augmentation of responses in only 5%. The decrement in response strength was mimicked by application of the α2 adrenoceptor agonist, p-aminoclonidine, the nonspecific β agonist, isoproterenol, and the β1 agonist, dobutamine. T

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42

Khlopkova, Yuliya S., and Ludmila V. Kogoleva. "The study of visual evoked potentials in children with retinopathy of prematurity." Russian Pediatric Ophthalmology 17, no. 3 (October 28, 2022): 45–50. http://dx.doi.org/10.17816/rpoj108204.

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Visual functions in children after retinopathy of prematurity depend not only on the degree of residual clinical changes in the fundus and structural features of the retina, but also on the state of the pathways and higher parts of the visual analyzer, which can be investigated by recording visual evoked potentials. This examination method involves recording the overall response of large populations of cortical neurons to the synchronous flow of impulses coming to them, arising in response to an afferent stimulus and reflecting mainly the electrical activity of the macular area. The registrati

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43

Smith, E. E., M. Vijayappa, F. Lima, P. Delgado, L. Wendell, J. Rosand, and S. M. Greenberg. "Impaired visual evoked flow velocity response in cerebral amyloid angiopathy." Neurology 71, no. 18 (October 27, 2008): 1424–30. http://dx.doi.org/10.1212/01.wnl.0000327887.64299.a4.

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44

Sittiprapa, Wichian. "Sub-cortical Visual Evoked Response: Problems Solutions and Clinical Applications." Asian Journal of Biological Sciences 5, no. 8 (November 1, 2012): 449–54. http://dx.doi.org/10.3923/ajbs.2012.449.454.

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45

FAGAN, JOHN E., FREDERICK G. DOWNARD, and ROBERT L. YOLTON. "Steady-State Visual Evoked Response Amplitudes and Concurrent Electroencephalographic Activity." Optometry and Vision Science 62, no. 6 (June 1985): 418–22. http://dx.doi.org/10.1097/00006324-198506000-00011.

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46

Kawashima, Takashi, Satoru Watanabe, and Takashi Yamazaki. "Non linearity of the visual evoked response of the cats." Neuroscience Research Supplements 1 (January 1985): S163. http://dx.doi.org/10.1016/s0921-8696(85)80306-6.

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47

MADDESS, TED, ANDREW CHARLES JAMES, and ELIZABETH ANNE BOWMAN. "Contrast response of temporally sparse dichoptic multifocal visual evoked potentials." Visual Neuroscience 22, no. 2 (March 2005): 153–62. http://dx.doi.org/10.1017/s0952523805222046.

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Abstract (sommario):

Temporally sparse stimuli have been found to produce larger multifocal visual evoked potentials than rapid contrast-reversal stimuli. We compared the contrast-response functions of conventional contrast-reversing (CR) stimuli and three grades of temporally sparse stimuli, examining both the changes in response amplitude and signal-to-noise ratio (SNR). All stimuli were presented dichoptically to normal adult human subjects. One stimulus variant, the slowest pattern pulse, had interleaved monocular and binocular stimuli. Response amplitudes and SNRs were similar for all stimuli at contrast 0.4

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48

Jones, Keith S., Matthew Middendorf, Grant R. McMillan, Gloria Calhoun, and Joel Warm. "Comparing mouse and steady-state visual evoked response-based control." Interacting with Computers 15, no. 4 (August 2003): 603–21. http://dx.doi.org/10.1016/s0953-5438(03)00052-3.

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Kawashima, Takashi, Satoru Watanabe, and Takashi Yamazaki. "Non linearity of the visual evoked response of the cats." Neuroscience Research 3 (January 1985): S163. http://dx.doi.org/10.1016/0168-0102(85)90359-1.

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Collins, Alan D., and Bharat B. Sawhney. "Pseudorandom binary sequence stimulation applied to the visual evoked response." Documenta Ophthalmologica 83, no. 2 (June 1993): 163–73. http://dx.doi.org/10.1007/bf01206214.

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