Displaying electrocorticographic findings on gyral anatomy.
Human electrocorticographic findings recorded from subdural arrays of electrodes were topographically mapped directly onto magnetic resonance images of gyral anatomy. With this technique gyri involved in generating somatosensory evoked potentials and epileptic phenomena are easily identified. Regions of the cortex which exhibit local spectral changes associated with cognitive tasks can also be visualized. These composite images of structure and function can provide insight regarding the functional organization of human cortex in relation to gyral anatomy and localized pathologic rhythms.
Towle
V L
VL
Department of Neurology, University of Chicago, IL 60637, USA.
Cohen
S
S
Alperin
N
N
Hoffmann
K
K
Cogen
P
P
Milton
J
J
Grzesczcuk
R
R
Pelizzari
C
C
Syed
I
I
Spire
J P
JP
D001931:Brain Mapping / Q000379:methods*; D002540:Cerebral Cortex / Q000033:anatomy & histology / Q000502:physiology*; D004569:Electroencephalography / Q000379:methods*; D005073:Evoked Potentials, Somatosensory / Q000502:physiology; D006801:Humans; D007091:Image Processing, Computer-Assisted