Related Experiment Video
Updated: Jun 14, 2026
Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis
Published on: June 20, 2012
High-resolution BOLD fMRI measurements of local orientation-dependent contextual modulation show a mismatch between
Jennifer F Schumacher1, Cheryl A Olman
1Department of Neuroscience, University of Minnesota, N-218 Elliott Hall, 75 East River Parkway, Minneapolis, MN 55455, USA. schum204@umn.edu
Abstract:
The blood oxygenation level-dependent (BOLD) functional MRI response to suppressive neural activity has not been tested on a fine spatial scale. Using Gabor patches placed in the near periphery, we precisely localized individual regions of interest in primary visual cortex and measured the response at a range of contrasts in two different contexts: with parallel and with orthogonal flanking Gabor patches. Psychophysical measurements confirmed strong suppression of the target Gabor response when flanked by parallel Gabors. However, the BOLD response to the target with parallel flankers decreased as the target contrast increased, which contradicts psychophysical estimates of local neural activity.
More Related Videos
08:19Simultaneous Data Collection of fMRI and fNIRS Measurements Using a Whole-Head Optode Array and Short-Distance Channels
Published on: October 20, 2023
10:09Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies
Published on: September 22, 2014