Visual evoked responses to sinusoidal gratings presented in central and right visual fields: I

Conference · Thu Jan 01 04:00:00 EST 1987

OSTI ID:6090351

George, J S; Aine, C J; Flynn, E R

The present study applies neuromagnetic measurement techniques to probe the neurophysiological processing of spatial frequency (SF) by normal human observers. By exploiting the temporal and spatial resolution of neuromagnetic measurements, we hope to discriminate and characterize underlying neural functions and explore their correlation with perceptual or behavioral performance measures. Spatial frequency analysis has proven a useful paradigm for the study of visual perception and has been applied in psychophysical studies as well as invasive anatomical and physiological studies of experimental animals. These approaches have produced evidence of specialized neural activity and network structure for the analysis of spatial frequency information. Because the encoding of spatial frequency is a function of neuronal receptive-field size and since receptive-field size varies as a function of retinal location, we have also examined effects of visual field on responses to stimuli of defined spatial frequency content. 10 refs., 3 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6090351
• Report Number(s): LA-UR-87-2682; CONF-8708121-2; ON: DE87014731
• Country of Publication: United States
• Language: English

Related Subjects

550100* -- Behavioral Biology
551000 -- Physiological Systems
59 BASIC BIOLOGICAL SCIENCES
ANIMALS
BEAM ANALYZERS
BEHAVIOR
BODY
BRAIN
CENTRAL NERVOUS SYSTEM
DIAGNOSTIC TECHNIQUES
ELECTROENCEPHALOGRAPHY
ELECTROPHYSIOLOGY
MAGNETIC ANALYZERS
MAMMALS
MAN
NERVOUS SYSTEM
ORGANS
PHYSIOLOGY
PRIMATES
VERTEBRATES