2013
DOI: 10.1038/nn.3381
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Attention during natural vision warps semantic representation across the human brain

Abstract: Little is known about how attention changes the cortical representation of sensory information in humans. Based on neurophysiological evidence, we hypothesized that attention causes tuning changes to expand the representation of attended stimuli at the cost of unattended stimuli. To investigate this issue we used functional MRI (fMRI) to measure how semantic representation changes when searching for different object categories in natural movies. We find that many voxels across occipito-temporal and fronto-pari… Show more

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Cited by 306 publications
(291 citation statements)
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“…The triplets of words defining the target stimuli did not contain any verbs, in order not to stress the functional differences between animals and tools. Such a 1-back oddball task was orthogonal to the dimensions investigated (size, category, cluster), and this allowed us to disentangle task-dependent processes from the spontaneous mental representations of the words (Cukur et al, 2013). Target stimuli were flashed in the center of the screen three times in a row (each time in a different font among Lucida Fax, Helvetica and Courier, to avoid adaptation): each presentation lasted 0.5 s and the interval between them was 0.2 s for a total of 1.9s for each target stimulus.…”
Section: Testing Proceduresmentioning
confidence: 99%
“…The triplets of words defining the target stimuli did not contain any verbs, in order not to stress the functional differences between animals and tools. Such a 1-back oddball task was orthogonal to the dimensions investigated (size, category, cluster), and this allowed us to disentangle task-dependent processes from the spontaneous mental representations of the words (Cukur et al, 2013). Target stimuli were flashed in the center of the screen three times in a row (each time in a different font among Lucida Fax, Helvetica and Courier, to avoid adaptation): each presentation lasted 0.5 s and the interval between them was 0.2 s for a total of 1.9s for each target stimulus.…”
Section: Testing Proceduresmentioning
confidence: 99%
“…An assumption prevalent in the literature is that comprehension and reading processes are dissociable from sustained attention, and that they can be dissociated by using a control task matched in attentional complexity. Recent research however suggests that attention is a cortex‐wide dynamic process whereby resources are flexibly allocated to the attended function as opposed to a simple mechanism that merely modulates baseline response level [Çukur et al, 2013, Peelen and Kastner, 2014]. But this also implies that subtractive analyses attempting to control for attention factors assuming a static modular nature of attention may be overly conservative.…”
Section: Discussionmentioning
confidence: 99%
“…Encoding models predict neural or hemodynamic response patterns from computational model parameters 43,44 . This approach has provided insights in domains including visual image identification 30,31,43 , attentional processing 45,46 , and memory 47 . However, encoding models do not support an easy link to behavior 44 .…”
Section: Aligning Complex Behavior Computational Theory and Brain Amentioning
confidence: 99%