Faculty Opinions recommendation of Parvalbumin-expressing interneurons linearly transform cortical responses to visual stimuli.

2012 ◽  
Author(s):  
Alexander Fleischmann ◽  
Benjamin Roland
Keyword(s):  
Visual Stimuli ◽  
Cortical Responses

scholarly journals Vision is required for the formation of binocular neurons prior to the classical critical period

2021 ◽  
Author(s):  
Liming Tan ◽  
Dario L. Ringach ◽  
S. Lawrence Zipursky ◽  
Joshua T. Trachtenberg
Keyword(s):  
Visual Cortex ◽  
Primary Visual Cortex ◽  
Depth Perception ◽  
Critical Period ◽  
Visual Stimuli ◽  
Cortical Responses ◽  
Eye Opening

Depth perception emerges from the development of binocular neurons in primary visual cortex. Vision is required for these neurons to acquire their mature responses to visual stimuli. A prevalent view is that vision does not influence binocular circuitry until the onset of the critical period, about a week after eye opening, and that this relies on inhibition. Here, we show that vision is required to form binocular neurons and to improve binocular tuning and matching from eye opening until critical period closure. Inhibition is not required for this process, but rather antagonizes it. Vision improves the tuning properties of binocular neurons by strengthening and sharpening ipsilateral eye cortical responses. This progressively changes the population of neurons in the binocular pool and this plasticity is sensitive to interocular differences prior to the critical period. Thus, vision guides binocular plasticity from eye opening and prior to the classically defined critical period.

scholarly journals Parvalbumin-Expressing Interneurons Linearly Transform Cortical Responses to Visual Stimuli

Neuron ◽  
2012 ◽  
Vol 73 (1) ◽  
pp. 159-170 ◽  
Author(s):  
Bassam V. Atallah ◽  
William Bruns ◽  
Matteo Carandini ◽  
Massimo Scanziani
Keyword(s):  
Visual Stimuli ◽  
Cortical Responses

Competitive Dynamics in Cortical Responses to Visual Stimuli

2005 ◽  
Vol 94 (5) ◽  
pp. 3388-3396 ◽  
Author(s):  
Samat Moldakarimov ◽  
Julianne E. Rollenhagen ◽  
Carl R. Olson ◽  
Carson C. Chow
Keyword(s):  
Full Range ◽  
Visual Stimuli ◽  
Macaque Monkey ◽  
Competitive Dynamics ◽  
Network Behavior ◽  
Governing Parameter ◽  
Cortical Responses ◽  
Cortical Circuit ◽  
Winner Take All ◽  
Take All

Neurons in the visual cortex of the macaque monkey exhibit a variety of competitive behaviors, including normalization and oscillation, when presented with multiple visual stimuli. Here we argue that a biophysically plausible cortical circuit with opponent inhibition, spike-frequency adaptation, and synaptic depression can account for the full range of behaviors. The governing parameter is the strength of inhibition between competing neuronal pools. As the strength of inhibition is increased, the pattern of network behavior shifts from normalization mode to oscillatory mode, with oscillations occurring at progressively lower frequency until, at the extreme, winner-take-all behavior appears.

EVOKED CORTICAL RESPONSES TO AFFECTIVE VISUAL STIMULI

1967 ◽  
Vol 3 (4) ◽  
pp. 336-344 ◽  
Author(s):  
Henri Begleiter ◽  
Milton M. Gross ◽  
Benjamin Kissin
Keyword(s):  
Visual Stimuli ◽  
Cortical Responses ◽  
Affective Visual Stimuli

scholarly journals Development of Cortical Integration of Visual Stimuli in Very Preterm Infants

2019 ◽  
Vol 12 (1) ◽  
pp. 16-17
Author(s):  
C. Zores ◽  
A. Marchal ◽  
M. Davy ◽  
T. Pebayle ◽  
D. Astruc ◽  
...  
Keyword(s):  
Preterm Infants ◽  
Visual Stimuli ◽  
Light Level ◽  
Very Preterm Infants ◽  
Behavioural Responses ◽  
Very Preterm ◽  
Cortical Responses

Very preterm infants (VPI) are exposed to atypical visual stimuli in the hospital. They are able to exhibit physiological and behavioural responses to ecological visual stimuli in the NICU from 28 weeks post-menstrual age (PMA).1,2 However, little is known about their cortical responses to light level changes and the development of this cortical integration until term post-menstrual age (PMA).

scholarly journals Size perception biases are temporally stable and vary consistently between visual field meridians

2019 ◽  
Author(s):  
D. Samuel Schwarzkopf
Keyword(s):  
Visual Field ◽  
Stimulus Duration ◽  
Visual Stimuli ◽  
Apparent Size ◽  
Size Perception ◽  
Horizontal Meridian ◽  
Discrimination Ability ◽  
Cortical Responses ◽  
Independent Test ◽  
Visual Cortical

The apparent size of visual stimuli depends on where in the visual field they appear. I recently presented a model of how size perception could be biased by stimulus encoding in retinotopic cortex. However, it remains unclear if such biases are related to general discrimination ability and if they are temporally stable. Moreover, an independent test of the model assumptions is still outstanding. Here I present two experiments to address these issues. Experiment 1 shows that perceptual biases are stable across stimulus durations between 50-1000 ms, even though discrimination ability increases with stimulus duration. Experiment 2 demonstrates that perceptual biases are stronger along the vertical than the horizontal meridian, which mirrors recently reported differences in positional tuning. Taken together, these findings support the predictions of our model of how size is inferred from visual cortical responses.

scholarly journals Functional Signalers of Changes in Visual Stimuli: Cortical Responses to Increments and Decrements in Motion Coherence

2012 ◽  
Vol 24 (1) ◽  
pp. 110-118 ◽  
Author(s):  
Mauro Costagli ◽  
Kenichi Ueno ◽  
Pei Sun ◽  
Justin L. Gardner ◽  
Xiaohong Wan ◽  
...  
Keyword(s):  
Visual Stimuli ◽  
Cortical Responses ◽  
Motion Coherence
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