ISSN:
1432-1106
Keywords:
Human vision
;
Simultaneous contrast
;
Square-wave flicker
;
Lateral interaction
;
On-center and off-center neurons
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary In psychophysical experiments the bright-dark contrast effects observed in a steady test-field were measured as a function of the temporal frequency of an inducing-field modulated symmetrically about the test-field luminance. The frequency-contrast functions obtained from these measurements were interpreted as reflecting the temporal frequency characteristics of the lateral pathways within the B and D systems (the on-center and off-center neurons) in human vision. Psychophysical evidence is further presented that the lateral neural pathways have lower temporal cut-off frequencies than the “straight-through” pathways. The results are discussed in terms of the frequency characteristics of the center and surround of the receptive fields of on-center and off-center neurons. It is doubtful, however, whether the psychophysical results can be fully explained by the properties of the single-unit receptive field mechanism.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00234919
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