Meeting Banner
Abstract #1497

Two-dimensional population receptive field mapping of human primary somatosensory cortex

Michael Asghar1, Rosa Sanchez Panchuelo2, Denis Schluppeck1, and Susan Francis1
1University of Nottingham, Nottingham, United Kingdom, 2University Hospitals Birmingham NHS Foundation Trust, Birmingham, United Kingdom


High-resolution fMRI data of somatosensory cortex were obtained at 7T (n=7 participants) using a 4x4 grid of piezoelectric stimulators. Population receptive field (pRF) mapping was performed using different model specifications (1D Gaussian within-digit, 1D Gaussian between-digit, 2D Gaussian of within-digit and between-digit, Unconstrained model) and pRF sizes were estimated. Grouping pRF response by 4 preferred locations within digits (along tip-base axis) or by Brodmann areas revealed more elliptical pRFs within digit representations of D2 to D4 and more circularly symmetric pRFs for D5. We also found relatively larger pRF sizes in D5 and towards the base of the digits.

This abstract and the presentation materials are available to members only; a login is required.

Join Here