PMID: 2487634Jan 1, 1989Paper

Intensity, color, and pattern discrimination deficits after lesions of the core and belt regions of the ectostriatum

Visual Neuroscience
B B Bessette, W Hodos

Abstract

Pigeons were trained to discriminate visual stimuli that differed in intensity, color, or pattern, after which lesions were made in the ectostriatum, either the core region (EC), the belt region (EB), or both (EC + EB). Control lesions were made in the lateral neostriatum. After surgery, the birds were again trained to discriminate the stimuli. On the basis of a quantitative analysis of the lesion reconstructions, each pigeon was assigned to one of five groups: EC, EB, moderate (EC + EB), slight (EC + EB), or control. Postoperative savings scores, based on the number of preoperative and postoperative sessions required to discriminate the stimuli, were calculated. An analysis of variance indicated a significant effect of lesion location on the extent of postoperative savings or loss. Only the moderate (EC + EB) group was significantly different from the neostriatum controls. A multiple regression analysis of performance on the individual discrimination tasks indicated that the extent of damage to EC predicted the initial performance deficit on the intensity and one of the two pattern discrimination tasks (vertical versus horizontal bar). The color discrimination deficit, which was modest in extent and of short duration, was pred...Continue Reading

References

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Jan 1, 1988·Visual Neuroscience·C Kertzman, W Hodos
Sep 1, 1988·Behavioural Brain Research·W HodosB B Bessette
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Oct 1, 1953·Journal of Neuropathology and Experimental Neurology·H KLUVER, E BARRERA

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Citations

Oct 2, 2009·Journal of Computational Neuroscience·Babette DellenFlorentin Wörgötter
Sep 1, 1988·Behavioural Brain Research·W HodosB B Bessette
Jul 22, 2004·Behavioural Brain Research·Cheri A Budzynski, Verner P Bingman
Jul 26, 2003·Brain Research. Cognitive Brain Research·Shigeru Watanabe
Aug 11, 2010·Journal of Comparative Psychology·David A Leopold, Gillian Rhodes
Sep 21, 2010·The Journal of Comparative Neurology·Felipe FredesJorge Mpodozis
Mar 29, 2012·The European Journal of Neuroscience·Josine VerhaalOnur Güntürkün
Mar 26, 2011·Behavioural Brain Research·Shigeru WatanabeHans-Joachim Bischof
Feb 28, 2002·The European Journal of Neuroscience·Cheri A BudzynskiVerner P Bingman
Nov 1, 1993·Visual Neuroscience·L M ChavesO Güntürkün
Nov 22, 2000·The Journal of Comparative Neurology·B Hellmann, O Güntürkün
Aug 24, 1999·The European Journal of Neuroscience·B Hellmann, O Güntürkün
Apr 11, 2013·Animal Cognition·O Rosa SalvaG Vallortigara
Jan 24, 2021·Communications Biology·Noemi RookRoland Pusch

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