Button-Pressing Affects P300 Amplitude and Scalp Topography

Topics:
Healthcare Products
Tags:
Potential,
Reed Elsevier Inc.
Source:
Reed Elsevier

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Overview: Scant and equivocal research exists examining the effects of button-pressing on P300. Button-pressing may decrease P300 latency and amplitude. The melding of motor potentials and P300 may also confound studies of P300 topography, such as studies of temporal scalp-area asymmetries in schizophrenia. Button-pressing generates smaller P300 than silent-counting. Also, P300 topography in button-pressing tasks is confounded by motor potentials. The distortion can be corrected with a motor potential estimate. Motor potentials can occlude differences in P300 topography between groups.

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Format: PDF | Size: 420KB | Date: Oct 2001 | Pages: 9

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