Dear colleagues,
I have a question regarding the haemodynamic delay in BOLD fMRI. The literature
seems in general agreement that the latency between stimulus onset and 90% maximum
MR signal is of the order 5-8 seconds in primary cortex.
Is anyone aware of work examining the latency of the BOLD response in other brain
areas compared to primary cortex? It has often been stated that the latency is
different across brain regions but I have been unable to find much work specifically
adressing this question.
Is the latency longer for 'association cortex' or subcortical areas for example ?
Any suggestions would be appreciated,
David Werring
NMR Research Unit
Institute of Neurology
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