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The opto kinetic reactions of the rabbit relation to the visual streak


, : The opto kinetic reactions of the rabbit relation to the visual streak. Vision Research 19(1): 9-18

The effectiveness of different parts of the retina in mediating optokinetic tracking of a moving pattern (OKN) was tested with relatively small random dot patterns (diameter 30.degree.) that were moved in 8 directions. The retinal location of the stimulus was fixed by immobilization of the eye or by servo-control of the stimulus position by the eye position. The area of maximal optokinetic sensitivity was coextensive with the visual streak. The total sensitive area extended between 50.degree. superior, 10.degree. inferior, 75.degree. posterior and 100.degree. anterior in the visual field of 1 eye. Beyond this area no OKN could be elicited. OKN smooth phase velocity was maximal for stimulation in anterior direction, about 3 times smaller for vertical movement and 20 times smaller for posterior movement. Only the cooperation of the 2 eyes can assure balanced responses in all directions. Such a design supports the function of the rabbits OKN in global stabilization, but is unsuitable for the pursuit of small objects.


Accession: 006728638

PMID: 419706

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Related references

Neverov V.P.; Bures J., 1976: Saccadic suppression during opto kinetic and reversive post opto kinetic nystagmus in the rabbit. Physiologia Bohemoslovaca 25(5): 461-462

Miyoshi T.; Pfaltz C.R., 1973: Upon the correlation between the opto kinetic stimulus and the induced opto kinetic nystagmus part 1 influence of opto kinetic targets. ORL (Basel) 35(1): 52-64

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