PRESENTATION RATE AND MAGNITUDE OF STIMULUS DEVIANCE EFFECTS ON HUMANPRE-ATTENTIVE CHANGE DETECTION

Authors
SCHROGER E WINKLER I
Citation
E. Schroger et I. Winkler, PRESENTATION RATE AND MAGNITUDE OF STIMULUS DEVIANCE EFFECTS ON HUMANPRE-ATTENTIVE CHANGE DETECTION, Neuroscience letters, 193(3), 1995, pp. 185-188
Citations number
28
Categorie Soggetti
Neurosciences
Journal title
Neuroscience letters → ACNP
ISSN journal
03043940
Volume
193
Issue
3
Year of publication
1995
Pages
185 - 188
Database
ISI
SICI code
0304-3940(1995)193:3<185:PRAMOS>2.0.ZU;2-Z
Abstract
The present study investigated the effects of the inter-stimulus inter val (ISI) and the magnitude of deviance on the mismatch negativity (MM N), an event-related potential index of pre-attentive change detection . The latency of the MMN to infrequent changes in intensity and durati on was prolonged by increasing the ISI from 400 ms to 4 s. Results ind icate that these features are preserved in sensory memory for several seconds. By increasing the ISI the sharpness of the neural traces decr eases, thus prolonging the change detection process.