Neuromagnetic Investigation of Cortical Regions Underlying Short-Term Memory

Abstract

Magnetic source imaging (MSI) makes it possible to identify the cortical area in the human brain whose activity reflects the decay of sensory storage of information about sounds (echoic memory). The lifetime for decay of the neuronal activation trace in primary auditory cortex is found to range from 0.8 sec to 3.4 sec for the subjects studied. Extensive behavioral studies that determine the duration of memory for the loudness of a tone show that these physiological measures predict the lifetime of echoic memory to within the uncertainty of 0.2 sec for each of the subjects.

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Document Details

Document Type
Technical Report
Publication Date
Dec 20, 1992
Accession Number
ADA261445

Entities

People

  • L. Kaufman
  • S. J. Williamson
  • Z.-l. Lu

Organizations

  • New York University

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Air Force
  • Amplitude
  • Computers
  • Gaussian Distributions
  • Hemispheres
  • Intervals
  • Judgment
  • Loudness
  • Magnetic Fields
  • New York
  • Probability
  • Psychology
  • Scientific Research
  • Sense Organs
  • Standards
  • Uncertainty

Fields of Study

  • Psychology

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Computational Modeling and Simulation
  • Vision Science/Vision Psychology/Cognitive Neuroscience.