Size-threshold changes after lesions of the visual telencephalon in pigeons

Behavioural Brain Research
W HodosB B Bessette

Abstract

Fifteen pigeons were tested in a psychophysical procedure that determined the limits of their ability to detect differences in the sizes of stimuli. The results indicated that intact pigeons can reliably discriminate an annulus 3.0 mm in diameter from one that is 3.9 mm in diameter. In the first experiment, pigeons with lesions of the ectostriatum that spared the medial 15% were unimpaired in their size-discrimination ability. Those cases in which the lesions involved both the medial and lateral regions of the ectostriatum were greatly impaired. In a second experiment, these findings were replicated. In some cases, the electrode trajectory was varied to rule out possible effects from non-ectostriatal structures. In addition, the second study indicated that destruction of the medial ectostriatum with the lateral regions intact had no measurable effect on size-difference thresholds. The medial region of ectostriatum is part of the termination field of a second tectofugal pathway to the telencephalon. This pathway passes from the optic tectum to nucleus dorsolateralis posterior thalami and then to the neostriatum intermedium, including the medial ectostriatum. An examination of the data of the present experiment and those of other...Continue Reading

References

Jun 1, 1977·Journal of Comparative and Physiological Psychology·T Pasternak, W Hodos
Dec 12, 1975·Brain Research·D MiceliJ Repérant
Jun 15, 1976·The Journal of Comparative Neurology·L I Benowitz, H J Karten
Aug 15, 1986·The Journal of Comparative Neurology·P D Gamlin, D H Cohen
Jan 1, 1985·Vision Research·W HodosS R Weiss
Dec 1, 1974·Journal of Comparative and Physiological Psychology·W Hodos, J C Bonbright
Jan 1, 1973·The Journal of Comparative Neurology·P WitkovskyR Silver
Feb 25, 1972·Brain Research·J D Delius, K Bennetto
Sep 29, 1972·Brain Research·S P Hunt, K E Webster
Oct 1, 1966·Brain Research·H J Karten, A M Revzin
Sep 1, 1970·The Journal of Comparative Neurology·H J Karten, W Hodos
Sep 1, 1970·The Journal of Comparative Neurology·W Hodos, H J Karten
May 1, 1971·Vision Research·R P KimberlyP Bamborough
Feb 1, 1967·Psychological Bulletin·B J Fellows
Jul 1, 1984·Behavioural Brain Research·K A Macko, W Hodos
Jul 1, 1984·Behavioural Brain Research·W HodosB B Bessette
Nov 1, 1984·Journal of Neuroscience Methods·W Hodos, P Bobko
Jun 1, 1982·Behavioural Brain Research·W HodosD I Sommers
Jan 1, 1982·Neuroscience·C A Kitt, S E Brauth
Oct 1, 1953·Journal of Neuropathology and Experimental Neurology·H KLUVER, E BARRERA

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Citations

Apr 11, 2013·Animal Cognition·O Rosa SalvaG Vallortigara
Aug 1, 1989·Physiology & Behavior·A S Powers
Sep 1, 1988·Behavioural Brain Research·W HodosB B Bessette
Nov 15, 1992·Behavioural Brain Research·V P Bingman, W Hodos
Jan 1, 1988·Visual Neuroscience·C Kertzman, W Hodos
Sep 21, 2010·The Journal of Comparative Neurology·Felipe FredesJorge Mpodozis
Aug 15, 1986·The Journal of Comparative Neurology·P D Gamlin, D H Cohen
Jan 1, 1989·Experimental Brain Research·R BermejoH P Zeigler
Dec 13, 2017·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Torsten StemmlerHermann Wagner

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