The Evoked Magnetic Field of the Human Brain.

Abstract

Instrumentation and procedures for detecting neuromagnetic fields evoked by sensory stimuli in an unshielded environment are described. Latencies of somatosensory and visually evoked neuromagnetic responses are compared with simple reaction times. Assuming a serial model, the RT can be divided into motor and sensory components. The latter is reflected in the neuromagnetic response. The visual neuromagnetic response has revealed two functionally distinct components that may reflect activity of sustained channels. It has also permitted isolation of two distinct cortical regions with different response properties. Latencies of resopnse of each of the two hemispheres were studied and revealed marked individual differences.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1977
Accession Number
ADA067962

Entities

People

  • Lloyd Kaufman
  • Samuel J. Williamson

Organizations

  • New York University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Brain
  • Detection
  • Detectors
  • Electrical Resistance
  • Electronic Equipment
  • Electrophysiological Phenomena
  • Frequency
  • Gradiometers
  • Health Services
  • Heart
  • Magnetic Fields
  • Magnetic Flux
  • Magnetometers
  • Measurement
  • New York
  • Reaction Time
  • Visual Cortex

Fields of Study

  • Biology
  • Psychology

Readers

  • Neuroscience
  • Vision Science/Vision Psychology/Cognitive Neuroscience.