Abstract #0585
Distinct BOLD laminar profiles elicited by retino-cortical and inter-hemispheric sources in human early visual cortex
Alessio Fracasso 1 , Natalia Petridou 2 , and Serge O Dumoulin 1
1
Experimental Psychology, Helmholtz
Institute, Utrecht University, Utrecht, Netherlands,
2
Radiology,
Imaging Division, UMC Utrecht, Utrecht, Netherlands
A goal of laminar imaging is to infer the origin of
signals by functional laminar profiles. We used a visual
paradigm that increases responses in the contralateral
hemisphere driven by retino-cortical sources and
decreases responses in the ipsilateral hemisphere driven
by inter-hemispheric sources. GE-BOLD data were acquired
at 0.55
3
mm resolution. Laminar profiles were
sorted according to linear trend strength towards the
pial surface. Profiles showing a weak linear trend
revealed a peak or dip at the middle layers when driven
by retino-cortical or inter-hemispheric sources
respectively. These profiles demonstrate the ability of
laminar imaging to infer the origin of signals.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Click here for more information on becoming a member.
