Intra and cross-modal negative BOLD response to contrast-varying visual stimuli

The BOLD contrast is widely used to study brain function. Under externally-applied stimuli, positive BOLD responses (PBR) are generally attributed to local increases in brain activity. Negative BOLD responses (NBR) are also frequently observed, but their underlying neurovascular-coupling mechanisms are less well-understood. Here, we study the NBR to contrast-varying visual stimuli. Both intra-modal (located in regions directly associated with the stimulus) and cross-modal responses (located in functionally-distinct regions) are analyzed.


Presented at:
ESMRMB 29th Annual Scientific Meeting, Lisbon, Portugal, October 4-6, 2012
Year:
2012
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Note: PRIVATE


 Record created 2012-07-17, last modified 2018-01-28

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