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- W4323354660 endingPage "1320.e5" @default.
- W4323354660 startingPage "1308" @default.
- W4323354660 abstract "A person's cognitive state determines how their brain responds to visual stimuli. The most common such effect is a response enhancement when stimuli are task relevant and attended rather than ignored. In this fMRI study, we report a surprising twist on such attention effects in the visual word form area (VWFA), a region that plays a key role in reading. We presented participants with strings of letters and visually similar shapes, which were either relevant for a specific task (lexical decision or gap localization) or ignored (during a fixation dot color task). In the VWFA, the enhancement of responses to attended stimuli occurred only for letter strings, whereas non-letter shapes evoked smaller responses when attended than when ignored. The enhancement of VWFA activity was accompanied by strengthened functional connectivity with higher-level language regions. These task-dependent modulations of response magnitude and functional connectivity were specific to the VWFA and absent in the rest of visual cortex. We suggest that language regions send targeted excitatory feedback into the VWFA only when the observer is trying to read. This feedback enables the discrimination of familiar and nonsense words and is distinct from generic effects of visual attention." @default.
- W4323354660 created "2023-03-08" @default.
- W4323354660 creator A5012857592 @default.
- W4323354660 creator A5058410324 @default.
- W4323354660 creator A5058807565 @default.
- W4323354660 creator A5073966731 @default.
- W4323354660 date "2023-04-01" @default.
- W4323354660 modified "2023-10-16" @default.
- W4323354660 title "Engaging in word recognition elicits highly specific modulations in visual cortex" @default.
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