Visual discrimination between spatially separated stimuli by cats with lesions of the superior colliculus-pretectum.

Brain Research
J M Winterkorn

Abstract

(1) This study was designed to test the ability of cats with lesions of the superior colliculus-pretectum to discriminate between stimuli which are widely separated in space. (2) Intact cats and cats learning or relearning after lesions of the superior colliculus-pretectum, were trained on light-dark (LD) and horizontal-vertical stripe (HV) discriminations in a V-maze, where the stimuli were widely separated in space, or in a divided straight maze, where the stimuli were side by side. (3) Two types of errors were scored: door-push errors when the cat pushed open the incorrect door; alley-entrance errors when the cat entered the incorrect alley, but turned and entered the correct alley without having pushed the incorrect door. (4) In the V-maze as well as in the straight maze, cats with lesions of the superior colliculus-pretectum achieved criterional performance by alley-entrance and door-push scoring on LD and HV discriminations. Thus, cats with lesions of the superior colliculus-pretectum can locate or orient to widely separated visual stimuli well enough to discriminate between them from a distant choicepoint. (5) Cats with lesions of the superior colliculus-pretectum generally committed a larger number and higher percentage...Continue Reading

References

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Citations

Nov 1, 1977·Physiology & Behavior·J M Winterkorn
Sep 1, 2017·Journal of Neuro-ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society·Marc J Dinkin, Jeffrey G Odel
Aug 1, 1981·The Quarterly Journal of Experimental Psychology. B, Comparative and Physiological Psychology·P Dean, S G Pope
Apr 1, 1977·The Journal of Comparative Neurology·J M SpragueG Berlucchi

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