TY - JOUR
T1 - Dense sensor array topography of the event-related potential to task- relevant auditory stimuli
AU - Potts, Geoffrey F.
AU - Dien, Joseph
AU - Hartry-Speiser, Ann L.
AU - McDougal, Lynn M.
AU - Tucker, Don M.
N1 - Funding Information:
This research was supported by NIMH grants MH 42669, MH 42129, MH 18935, and the James S. McDonnell Foundation and Pew Charitable Trust grant to support the Oregon Center for the Cognitive Neuroscience of Attention.
Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 1998/5
Y1 - 1998/5
N2 - High spatial density recording and better topographic mapping algorithms have improved the spatial resolving power of the event-related potential (ERP), adding to its already excellent temporal resolution. This study used a 64 channel recording array and spherical spline interpolation to create topographic descriptions of the voltage and current density scalp distributions of the ERP in an auditory oddball paradigm. Frequent (standard) and infrequent (target) tones were presented at a rate of one every approximately 2500 ms to a group of 20 college undergraduates in passive listening and active (count the infrequent tones) task blocks. ANOVAs and topographic analyses were performed on the primary deflections in the 'late' portion of the ERP: the P1, N1, P2, N2 and P3. A target minus standard difference wave was also created for each task. The difference wave contained a mismatch negativity (MMN), an N2b and a P3d. The MMN did not differ between the passive and active tasks and had a topography similar to the N1; also the difference wave P3d was topographically similar to the target P3. The N2b, which occurred only to targets in the active condition, and was the first index of target detection, had a scalp distribution consistent with generation in frontal and superior temporal cortex, suggesting activity in cortical areas of selective attention and auditory stimulus representation.
AB - High spatial density recording and better topographic mapping algorithms have improved the spatial resolving power of the event-related potential (ERP), adding to its already excellent temporal resolution. This study used a 64 channel recording array and spherical spline interpolation to create topographic descriptions of the voltage and current density scalp distributions of the ERP in an auditory oddball paradigm. Frequent (standard) and infrequent (target) tones were presented at a rate of one every approximately 2500 ms to a group of 20 college undergraduates in passive listening and active (count the infrequent tones) task blocks. ANOVAs and topographic analyses were performed on the primary deflections in the 'late' portion of the ERP: the P1, N1, P2, N2 and P3. A target minus standard difference wave was also created for each task. The difference wave contained a mismatch negativity (MMN), an N2b and a P3d. The MMN did not differ between the passive and active tasks and had a topography similar to the N1; also the difference wave P3d was topographically similar to the target P3. The N2b, which occurred only to targets in the active condition, and was the first index of target detection, had a scalp distribution consistent with generation in frontal and superior temporal cortex, suggesting activity in cortical areas of selective attention and auditory stimulus representation.
KW - Current density mapping
KW - Frontal cortex
KW - Selective attention
KW - Spherical spline interpolation
KW - Temporal cortex
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U2 - 10.1016/S0013-4694(97)00160-0
DO - 10.1016/S0013-4694(97)00160-0
M3 - Article
C2 - 9680158
AN - SCOPUS:0031863133
SN - 0013-4694
VL - 106
SP - 444
EP - 456
JO - Electroencephalography and Clinical Neurophysiology
JF - Electroencephalography and Clinical Neurophysiology
IS - 5
ER -