Nonlinear event-related responses in fMRI

This paper presents an approach to characterizing evoked hemodynamic responses in fMRI based on nonlinear system identification, in particular the use of Volterra series. The approach employed enables one to estimate Volterra kernels that describe the relationship between stimulus presentation and t...

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Veröffentlicht in:	Magnetic resonance in medicine 1998-01, Vol.39 (1), p.41-52
Hauptverfasser:	Friston, Karl J., Josephs, Oliver, Rees, Geraint, Turner, Robert
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Brain - blood supply Evoked Potentials, Auditory - physiology fMRI functional neuro-imaging hemodynamic response function Hemodynamics - physiology Humans Investigative techniques, diagnostic techniques (general aspects) Magnetic Resonance Imaging - methods Male Medical sciences Nervous system Nonlinear Dynamics nonlinear system identification Radiodiagnosis. Nmr imagery. Nmr spectrometry Reference Values Sensitivity and Specificity Volterra series
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