Auditory magnetic source localization in twins.
We recorded magnetoencephalographic (MEG) auditory evoked fields (EF) from the L and R hemispheres of 12 paris of twins, 6 monozygotic (MZ), and 6 dizygotic (DZ) and localized the source of the 100 msec latency EF component termed the M100. M100 sources exhibited greater similarity in location in MZ twin pairs, especially in the L hemisphere. These findings support the hypothesis that the functional location of processing of nonmeaningful unattended auditory stimuli may depend more heavily on left hemisphere structures. Furthermore, genetic effects are evident in these left hemisphere structures and their activity, as is a substantial amount of environmental variance.
Reite
M
M
Department of Psychiatry, University of Colorado Health Sciences Center, Denver 80262.
Scheuneman
D
D
Gilger
J W
JW
Teale
P
P
Goldstein
L
L
Boccia
M
M
D000161:Acoustic Stimulation; D000328:Adult; D005072:Evoked Potentials, Auditory / Q000502:physiology; D005260:Female; D006801:Humans; D015225:Magnetoencephalography; D008297:Male; D013017:Sound Localization / Q000502:physiology*; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic