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Reversal of visual discrimination and visual acute extinction in cats with poor or limited early visual experience

100%
Zernicki B.
Acta Neurobiologiae Experimentalis
|
1997
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vol. 57
|
issue 4
323-328
EN
Transformation of visual instrumental conditioned reflexes rewarded with food was compared in cats binocularly deprived of pattern vision in the early period of life (BD cats), control cats reared also in the laboratory but with open eyes (C cats) and cats reared in normal environment (N cats). In Expt. I the cats were given 4 sequential reversal trainings of cross vs. disc discrimination and in Expt. II a response to a gate marked with a cross or a disc was submitted to 4 sequential acute extinctions and restorations. The results show that both visual deprivation and rearing in monotonous laboratory environment moderately affect transformation of associations between visual stimuli and hunger drive and instrumental responses. However, in BD cats transformation learning is less impaired than previously studied visual discrimination learning.
2
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Generalization of induced interhemispheric interference: a chronometric approach to one-brain vs two-brains models of the hemispheres cooperation

88%
Wolski P.
Acta Neurobiologiae Experimentalis
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1993
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vol. 53
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issue 1
251-256
EN
A reaction time study with normal human subjects was conducted to obtain support for one or the other model of interhemispheric relations - referred to as the one-system and the two-systems hypotheses. 12 subjects were extensively trained in a complex reaction time task consisting of a "priming sub-task" which introduced interhemispheric interference and two different "test sub-tasks" measuring the generalization of interference. The interference priming produced visible slowing of RT's on subsequent trials. Interestingly, the deterioration of the two test sub-tasks was alike, despite the marked difference in the amount of the interhemispheric communication they required. This result is more in line with the one-system hypothesis, as the two-systems hypothesis predicts deterioration proportional to the amount of the required interhemispheric communication.
3
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Persevaritive errors and reversal of visual discrimination following basal forebrain lesions in the rat

88%
Wilson W. J., Cook J. A.
Acta Neurobiologiae Experimentalis
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1995
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vol. 55
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issue 4
295-299
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