TY - JOUR
T1 - Sex differences in patterns of EEG asymmetry
AU - Davidson, Richard J.
AU - Schwartz, Gary E.
AU - Pugash, Eric
AU - Bromfield, Edward
N1 - Funding Information:
This research was supported in part by a Clark Fund award from Harvard University to the second author; a subcontract to the second author from ARPA of DOD and monitored by ONR under Contract N 00014-70-C-0350 to the San Diego State University Foundation; and an NSF predoctoral fellowship to the first author. The assistance of R. Lenson in computer analysis of the data is gratefully acknowledged.
PY - 1976/6
Y1 - 1976/6
N2 - This paper reports three studies showing sex differences in EEG asymmetry during self-generated cognitive and affective tasks. In the first experiment, bilateral EEG, quantified for alpha on-line, was recorded from right-handed subjects while they either whistled, sang or recited lyrics of familiar songs. The results revealed significant asymmetry between the whistle and talk conditions only for subjects with no familial left-handedness within this group, only for females and not for males. In the second experiment, bilateral EEG was recorded while right-handed subjects (with no familial left-handedness) self-induced covert affective and non-affective states. Results revealed significantly greater relative right-hemisphere activation during emotion versus non-emotion trials only in females; males showed no significant task-dependent shifts in asymmetry between conditions. The third experiment was designed to test the hypothesis that females show greater percent time asymmetry than males during biofeedback training for symmetical and asymmetrical EEG patterns. Results confirmed this prediction as well as indicating that females show better control of such asymmetrical cortical patterning. These findings provide new neuropsychological support for the hypothesis of greater bilateral flexibility in females during self-generation tasks.
AB - This paper reports three studies showing sex differences in EEG asymmetry during self-generated cognitive and affective tasks. In the first experiment, bilateral EEG, quantified for alpha on-line, was recorded from right-handed subjects while they either whistled, sang or recited lyrics of familiar songs. The results revealed significant asymmetry between the whistle and talk conditions only for subjects with no familial left-handedness within this group, only for females and not for males. In the second experiment, bilateral EEG was recorded while right-handed subjects (with no familial left-handedness) self-induced covert affective and non-affective states. Results revealed significantly greater relative right-hemisphere activation during emotion versus non-emotion trials only in females; males showed no significant task-dependent shifts in asymmetry between conditions. The third experiment was designed to test the hypothesis that females show greater percent time asymmetry than males during biofeedback training for symmetical and asymmetrical EEG patterns. Results confirmed this prediction as well as indicating that females show better control of such asymmetrical cortical patterning. These findings provide new neuropsychological support for the hypothesis of greater bilateral flexibility in females during self-generation tasks.
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U2 - 10.1016/0301-0511(76)90012-0
DO - 10.1016/0301-0511(76)90012-0
M3 - Article
C2 - 1276303
AN - SCOPUS:0017156813
SN - 0301-0511
VL - 4
SP - 119
EP - 137
JO - Biological Psychology
JF - Biological Psychology
IS - 2
ER -