Abstract #0635

Mapping digit-representations in BA3b during stimulation and investigating their intrinsic connectivity at rest using VASO

Sebastian Dresbach¹, Renzo Huber¹, Rainer Goebel¹, and Amanda Kaas¹

¹Cognitive Neuroscience, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, Netherlands

While inter-digit interactions are crucial for manual abilities like tool use or object manipulation, individual digits seem to be distinctly represented in the primary somatosensory cortex. Here, we used cortical depth-resolved high-resolution CBV-measurements to investigate these representations in the putative S1-subregion “BA3b” and depth-dependent temporal correlation during rest, as a potential index for layer-specific integration between digit representations. We found that we can

identify individual digit-representations in human subjects during stimulation using VASO
show more specific depth profiles for VASO than BOLD
see intrinsic interactions between digits at rest, which might be driven by deep-to-deep layer connections

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.