ISSN:
1432-1106
Keywords:
Toad optic tectum
;
Stimulus velocity
;
Neuronal classification
;
Prey recognition
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary In theoptic tectum ofBufo bufo the activity of single neurons was recorded during the presentation of moving visual stimuli. The location of the recorded cells was marked iontophoretically by means of alcian blue dye. A total of 132 cells were studied, most of which showed clear differences within their responses to a square and to rectangles oriented either horizontally or vertically. The cells were found primarily within the tectum layers 8 and 6. The majority of them preferred the square to the horizontal bar, and this stimulus to the vertical one. Another group responded best to the horizontal rectangle. Relatively few cells were found in which the vertical stimulus was preferred to the horizontal one. A considerable number of tectal cells showed a change of stimulus preference if the stimulus velocity was changed. No clear correlation between response types and anatomical distribution within the tectum layers could be found.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01208599
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