Document Detail

The late Nd reflects a memory trace containing amodal spatial information.
MedLine Citation:
PMID:  16176375     Owner:  NLM     Status:  MEDLINE    
The early Nd reflects the analysis of simple features of selectively attended auditory stimuli, but the precise nature of the more complex processing reflected by the late Nd is unclear. The late but not the early Nd is sensitive to interference from a concurrently presented visual spatial attention switching task. This experiment investigated whether the late Nd is also sensitive to deeper visual attention switching. Twenty-one subjects performed a dichotic listening task concurrently with either visual spatial or visual letter matching attention switching tasks. Late Nd amplitude was reduced by the spatial but not the letter matching task, indicating insensitivity to deeper attention switching. P300 amplitude was reduced by both tasks. Reductions in N100 and P200 were uncorrelated. We propose that, in part, the late Nd reflects an amodal memory trace containing spatial information, possibly involving a "where" rather than a "what" auditory pathway.
Sean Meehan; Anthony Singhal; Barry Fowler
Related Documents :
15709875 - A reminder about procedures needed to reliably produce perfect timesharing: comment on ...
19838725 - Stimulus-response bindings contribute to item switch costs in working memory.
24585845 - Joseph hersey pratt (1872-1956): an early proponent of cognitive-behavioural therapy in...
16490365 - Neural mechanisms of advance preparation in task switching.
22849835 - Haemodynamic parameters and cognitive function during modeled acute volume loss.
23944195 - Phonetic complexity and stuttering in arabic.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Psychophysiology     Volume:  42     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-09-22     Completed Date:  2006-03-07     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  531-9     Citation Subset:  IM    
Department of Kinesiology and Health Science, York University, North York, Ontario, Canada.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Attention / physiology*
Auditory Pathways / physiology
Cerebral Cortex / physiology
Contingent Negative Variation / physiology*
Dichotic Listening Tests
Event-Related Potentials, P300 / physiology
Functional Laterality / physiology
Orientation / physiology*
Pattern Recognition, Visual / physiology*
Pitch Discrimination / physiology
Psychomotor Performance / physiology
Reaction Time / physiology
Space Perception / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Electrophysiological correlates of threat processing in spider phobics.
Next Document:  Electrophysiological correlates of anticipatory task-switching processes.