Title
Linear and nonlinear relationships between visual stimuli, EEG and BOLD fMRI signals
UMMS Affiliation
Department of Psychiatry
Date
4-15-2010
Document Type
Article
Medical Subject Headings
Algorithms; Brain; Electroencephalography; Evoked Potentials, Visual; Female; Humans; Linear Models; Magnetic Resonance Imaging; Male; Nonlinear Dynamics; Oxygen; Photic Stimulation; Time Factors; Visual Perception; Young Adult
Disciplines
Psychiatry
Abstract
In the present study, the cascaded interactions between stimuli and neural and hemodynamic responses were modeled using linear systems. These models provided the theoretical hypotheses that were tested against the electroencephalography (EEG) and blood oxygen level dependent (BOLD) functional magnetic resonance imaging (fMRI) data recorded from human subjects during prolonged periods of repeated visual stimuli with a variable setting of the inter-stimulus interval (ISI) and visual contrast. Our results suggest that (1) neural response is nonlinear only when ISI
Rights and Permissions
Citation: Neuroimage. 2010 Apr 15;50(3):1054-66. Epub 2010 Jan 15. Link to article on publisher's site
