Jove
Visualize
Contact Us

Related Experiment Videos

The late Nd reflects a memory trace containing amodal spatial information.

Sean Meehan1, Anthony Singhal, Barry Fowler

  • 1Department of Kinesiology and Health Science, York University, North York, Ontario, Canada.

Psychophysiology
|September 24, 2005
PubMed
Summary

The late negative difference (Nd) component is not affected by deep visual attention switching, suggesting it processes spatial auditory information. This finding offers insights into auditory pathway processing.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The neural correlates of movement imagery performance in Parkinson's disease: Evidence of impairment and compensation.

Human movement science·2026
Same author

Preoperative Evaluation Terminology.

Journal of the American Dental Association (1939)·2026
Same author

Altered cognitive performance and frontal alpha asymmetries during emotion-cognition interactions in older adults with a history of depression and/or anxiety.

Journal of affective disorders·2026
Same author

Handedness modulates emotion cognition interactions as revealed by ERPs and alpha oscillations.

Scientific reports·2025
Same author

Polyamine Metabolism in Optic Nerve: Spatial Metabolomics with AP/MALDI Mass Spectrometry Imaging.

Methods in molecular biology (Clifton, N.J.)·2025
Same author

Parkinson's disease impairs the controllability of imagined action sequences.

Experimental brain research·2025
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Auditory Perception

Background:

  • The early negative difference (Nd) component reflects simple auditory feature analysis.
  • The complex processing underlying the late Nd remains unclear.
  • The late Nd is sensitive to visual spatial attention switching but not deeper processing.

Purpose of the Study:

  • To investigate if the late Nd is sensitive to deeper visual attention switching.
  • To differentiate between spatial and semantic processing in auditory attention.

Main Methods:

  • Twenty-one subjects performed a dichotic listening task concurrently with visual spatial or letter matching attention switching tasks.
  • Electroencephalography (EEG) was used to measure neural responses.
  • Analysis focused on the late Nd, N100, P200, and P300 components.

Related Experiment Videos

Main Results:

  • Late Nd amplitude decreased with the spatial task but not the letter matching task.
  • P300 amplitude was reduced by both visual tasks.
  • N100 and P200 reductions were uncorrelated.

Conclusions:

  • The late Nd appears insensitive to deeper, semantic visual attention switching.
  • Findings suggest the late Nd may reflect amodal spatial memory traces.
  • This could indicate a
  • where
  • auditory pathway distinct from a
  • what
  • pathway.