scholarly journals Attentional modulation in human visual cortex is constrained by the degree of competition among stimuli

2010 ◽  
Vol 9 (8) ◽  
pp. 96-96
Author(s):  
S. McMains ◽  
S. Kastner
Keyword(s):  
Visual Cortex ◽  
Attentional Modulation ◽  
Human Visual Cortex

scholarly journals Attentional modulation of oscillatory activity in human visual cortex

NeuroImage ◽  
2003 ◽  
Vol 20 (1) ◽  
pp. 98-113 ◽  
Author(s):  
Noriko Yamagishi ◽  
Daniel E Callan ◽  
Naokazu Goda ◽  
Stephen J Anderson ◽  
Yoshikazu Yoshida ◽  
...  
Keyword(s):  
Visual Cortex ◽  
Oscillatory Activity ◽  
Attentional Modulation ◽  
Human Visual Cortex

scholarly journals Attention hinges on tuned normalization strength within human visual cortex

2019 ◽  
Author(s):  
Ilona M. Bloem ◽  
Sam Ling
Keyword(s):  
Visual Cortex ◽  
Attentional Modulation ◽  
Human Visual Cortex ◽  
Divisive Normalization ◽  
Neural Computations ◽  
Do So

AbstractAlthough attention is known to increase the gain of visuocortical responses, its underlying neural computations remain unclear. Here, we used fMRI to test the hypothesis that a neural population’s ability to be modulated by attention is dependent on divisive normalization. To do so, we leveraged the feature-tuned properties of normalization and found that visuocortical responses to stimuli sharing features normalized each other more strongly. Comparing these normalization measures to measures of attentional modulation, we discovered that subpopulations that exhibited stronger normalization also exhibited larger attentional benefits. In a converging experiment, we demonstrated that attentional benefits were greatest when a subpopulation was forced into a state of stronger normalization. We propose a tuned normalization model of attention that parsimoniously accounts for many properties of our results, suggesting that the degree to which a subpopulation exhibits normalization plays a role in dictating its potential for attentional benefits.

scholarly journals Normalization governs attentional modulation within human visual cortex

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ilona M. Bloem ◽  
Sam Ling
Keyword(s):  
Visual Cortex ◽  
Attentional Modulation ◽  
Human Visual Cortex ◽  
Divisive Normalization ◽  
Neural Computations ◽  
Do So

AbstractAlthough attention is known to increase the gain of visuocortical responses, its underlying neural computations remain unclear. Here, we use fMRI to test the hypothesis that a neural population’s ability to be modulated by attention is dependent on divisive normalization. To do so, we leverage the feature-tuned properties of normalization and find that visuocortical responses to stimuli sharing features normalize each other more strongly. Comparing these normalization measures to measures of attentional modulation, we demonstrate that subpopulations which exhibit stronger normalization also exhibit larger attentional benefits. In a converging experiment, we reveal that attentional benefits are greatest when a subpopulation is forced into a state of stronger normalization. Taken together, these results suggest that the degree to which a subpopulation exhibits normalization plays a role in dictating its potential for attentional benefits.

Attentional modulation in the human visual cortex: The time-course of the BOLD response and its implications

NeuroImage ◽  
2006 ◽  
Vol 29 (1) ◽  
pp. 328-334 ◽  
Author(s):  
Andrew T. Smith ◽  
Nathalie M. Cotillon-Williams ◽  
Adrian L. Williams
Keyword(s):  
Visual Cortex ◽  
Time Course ◽  
Bold Response ◽  
Attentional Modulation ◽  
Human Visual Cortex

scholarly journals Attentional Modulation of Neuromagnetic Evoked Responses in Early Human Visual Cortex and Parietal Lobe following a Rank-Order Rule

2011 ◽  
Vol 31 (48) ◽  
pp. 17622-17636 ◽  
Author(s):  
T. Lennert ◽  
R. Cipriani ◽  
P. Jolicoeur ◽  
D. Cheyne ◽  
J. C. Martinez-Trujillo
Keyword(s):  
Visual Cortex ◽  
Parietal Lobe ◽  
Rank Order ◽  
Evoked Responses ◽  
Attentional Modulation ◽  
Human Visual Cortex ◽  
Early Human ◽  
Order Rule

scholarly journals Attentional modulation of perceptual grouping in human visual cortex: ERP studies

2005 ◽  
Vol 26 (3) ◽  
pp. 199-209 ◽  
Author(s):  
Shihui Han ◽  
Yi Jiang ◽  
Lihua Mao ◽  
Glyn W. Humphreys ◽  
Jungang Qin
Keyword(s):  
Visual Cortex ◽  
Perceptual Grouping ◽  
Attentional Modulation ◽  
Human Visual Cortex

scholarly journals Attentional modulation of perceptual grouping in human visual cortex: Functional MRI studies

2005 ◽  
Vol 25 (4) ◽  
pp. 424-432 ◽  
Author(s):  
Shihui Han ◽  
Yi Jiang ◽  
Lihua Mao ◽  
Glyn W. Humphreys ◽  
Hua Gu
Keyword(s):  
Visual Cortex ◽  
Functional Mri ◽  
Perceptual Grouping ◽  
Attentional Modulation ◽  
Human Visual Cortex ◽  
Mri Studies
Sign in / Sign up

Export Citation Format

Share Document