TY - JOUR
T1 - Posterior Alpha and Gamma Oscillations Index Divergent and Superadditive Effects of Cognitive Interference
AU - Wiesman, Alex I.
AU - Wilson, Tony W.
N1 - Funding Information:
National Institutes of Health (grants R01-MH103220 to T.W.W., R01-MH116782 to T.W.W., R01-MH118013 to T.W.W., and F31-AG055332 to A.I.W.); National Science Foundation (grant #1539067 to T.W.W.); NASA Nebraska Space Grant (A.I.W.).
Publisher Copyright:
© 2019 The Author(s) 2019. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: [email protected].
PY - 2020/3/14
Y1 - 2020/3/14
N2 - Conflicts at various stages of cognition can cause interference effects on behavior. Two well-studied forms of cognitive interference are stimulus-stimulus (e.g., Flanker), where the conflict arises from incongruence between the task-relevant stimulus and simultaneously presented irrelevant stimulus information, and stimulus-response (e.g., Simon), where interference is the result of an incompatibility between the spatial location of the task-relevant stimulus and a prepotent motor mapping of the expected response. Despite substantial interest in the neural and behavioral underpinnings of cognitive interference, it remains uncertain how differing sources of cognitive conflict might interact, and the spectrally specific neural dynamics that index this phenomenon are poorly understood. Herein, we used an adapted version of the multisource interference task and magnetoencephalography to investigate the spectral, temporal, and spatial dynamics of conflict processing in healthy adults (N = 23). We found a double-dissociation such that, in isolation, stimulus-stimulus interference was indexed by alpha (8-14 Hz), but not gamma-frequency (64-76 Hz) oscillations in the lateral occipital regions, while stimulus-response interference was indexed by gamma oscillations in nearby cortices, but not by alpha oscillations. Surprisingly, we also observed a superadditive effect of simultaneously presented interference types (multisource) on task performance and gamma oscillations in superior parietal cortex.
AB - Conflicts at various stages of cognition can cause interference effects on behavior. Two well-studied forms of cognitive interference are stimulus-stimulus (e.g., Flanker), where the conflict arises from incongruence between the task-relevant stimulus and simultaneously presented irrelevant stimulus information, and stimulus-response (e.g., Simon), where interference is the result of an incompatibility between the spatial location of the task-relevant stimulus and a prepotent motor mapping of the expected response. Despite substantial interest in the neural and behavioral underpinnings of cognitive interference, it remains uncertain how differing sources of cognitive conflict might interact, and the spectrally specific neural dynamics that index this phenomenon are poorly understood. Herein, we used an adapted version of the multisource interference task and magnetoencephalography to investigate the spectral, temporal, and spatial dynamics of conflict processing in healthy adults (N = 23). We found a double-dissociation such that, in isolation, stimulus-stimulus interference was indexed by alpha (8-14 Hz), but not gamma-frequency (64-76 Hz) oscillations in the lateral occipital regions, while stimulus-response interference was indexed by gamma oscillations in nearby cortices, but not by alpha oscillations. Surprisingly, we also observed a superadditive effect of simultaneously presented interference types (multisource) on task performance and gamma oscillations in superior parietal cortex.
KW - double dissociation
KW - magnetoencephalography
KW - multisource interference task
KW - neural oscillations
KW - superadditivity
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U2 - 10.1093/cercor/bhz214
DO - 10.1093/cercor/bhz214
M3 - Article
C2 - 31711121
AN - SCOPUS:85081991263
SN - 1047-3211
VL - 30
SP - 1931
EP - 1945
JO - Cerebral Cortex
JF - Cerebral Cortex
IS - 3
ER -