ERG (Electroretinogram) Implicit Time: An Exploration of High Frequency Wavelets Recorded in the Human Visual System.

Abstract

Previous research by the author had demonstrated that the spectral sensitivity of the visual system as measured by the visual evoked potential from the human scalp exhibited discrepancies from the spectral sensitivity function as measured by psychophysical techniques. These discrepancies were in the short wavelength (blue) region of the visible spectrum. Such discrepancies were explained by the discovery that blue lights evoked cortical potentials with longer latencies and implicit times than lights which stimulate the middle and long wavelength sensitive mechanisms. The current research deals with a further elucidation of this finding, by studying the fast wavelets (oscillatory potentials) arising in the retina and measured by means of the electroretinogram. High frequency wavelets were also observed at the scalp in the visual evoked potential.

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Document Details

Document Type
Technical Report
Publication Date
Oct 15, 1983
Accession Number
ADA134575

Entities

People

  • John B. Siegfried

Organizations

  • Gettysburg College

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Amplifiers
  • Amplitude
  • Bandpass Filters
  • Distortion
  • Electrodes
  • Electrophysiological Phenomena
  • Filters
  • Filtration
  • Frequency
  • Microprocessors
  • Military Research
  • Recording Systems
  • Repetition Rate
  • Sine Waves
  • Visual Cortex
  • Waveforms
  • Waves

Readers

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