Records |
Author |
Andrew, R.J. |
Title |
Changes in visual responsiveness following intercollicular lesions and their effects on avoidance and attack |
Type |
Journal Article |
Year |
1974 |
Publication |
Brain, Behavior and Evolution |
Abbreviated Journal |
Brain Behav Evol |
Volume |
10 |
Issue |
4-5 |
Pages |
400-424 |
Keywords |
Animals; Chickens; Humans; Male; Mutism; Superior Colliculi/*physiology; Tectum Mesencephali; Testosterone; Visual Fields; Vocalization, Animal |
Abstract |
In the normal chick, conspicuous visual stimuli induce targetting and pecking together, with vocalization. All three are abolished by lesion of the intercollicular area (ICo) or of connections passing through its medial margin. After such lesions, chicks also cease to treat significant visual stimuli as if they were startling and exciting, and may delay response as a result. However, they are still able to recognise, orient accurately to, and respond appropriately to, a variety of complex visual stimuli (e.g. food grains, copulation object). In addition, they are little affected by strange surroundings. Lesion evidence suggests the mammalian subcollicular area to have similar functions to the ICo and to be homologous with it. A route (present in bird), which is well-known in mammals for its association with threat, defense and escape evoked by strange and frightening objects (amygdala-diencephalic periventricular system-central mesencephalic grey, A-DPS-CMG) is stimuli via the 2 ICo (subcollicular area). Two different mechanisms may be involved caudal to the ICo. One consists of tectal afferents which might modulate the evocation of targetting, pecking and other responses via the tectum. The other is the predorsal system of tectal efferents which may mediate such responses. Classical syndromes of tameness and unresponsiveness produced by various interruptions of the A-DPS-CMG route may depend on interruption of connections to these midbrain mechanisms. Attack is depressed by ICo lesions as one aspect of reduced responsiveness to conspicuous and startling visual stimuli. Avoidance, which is apparently mediated by a separate system, much as in Anura, is facilitated. |
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English |
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0006-8977 |
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PMID:1169102 |
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Equine Behaviour @ team @ |
Serial |
4626 |
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BACK DG et al, |
Title |
Observations on the sexual behaviour of nonlactating mares |
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Journal Article |
Year |
1974 |
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Amer Vet Med Ass J |
Volume |
165 |
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Pages |
717-720 |
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from Professor Hans Klingels Equine Reference List |
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907 |
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Author |
Eisenmann V, G.D.C. |
Title |
Caractères distinctifs des premières phalanges antérieures et postérieures chez certains équidés actuels et fossiles |
Type |
Journal Article |
Year |
1974 |
Publication |
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Abbreviated Journal |
Bull Soc g?ol France |
Volume |
16 |
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Pages |
352-361 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1059 |
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Author |
Eisenmann V, G.D.C. |
Title |
Caractères distinctifs entre vrais zèbres et zèbres de Chapman d`après l`étude de 60 têtes osseuses. |
Type |
Journal Article |
Year |
1974 |
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Abbreviated Journal |
Mammalia |
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38 |
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509-543 |
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from Professor Hans Klingels Equine Reference List |
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1060 |
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Author |
Estes Rd, |
Title |
Zebras offer clues to the way wild horses once lived |
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Journal Article |
Year |
1974 |
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Smithsonian |
Volume |
5 |
Issue |
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Pages |
100-107 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1075 |
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Author |
Frerichs Wm, H. |
Title |
Treatment of equine piroplasmosis with imidocarb dipropionate |
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Journal Article |
Year |
1974 |
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Vet Rec |
Volume |
95 |
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188-189 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1096 |
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Author |
Joubert E, |
Title |
Composition and limiting factors of a Khomas Hochland population of Hartmann zebra |
Type |
Journal Article |
Year |
1974 |
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Madoqua |
Volume |
8 |
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49-53 |
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from Professor Hans Klingels Equine Reference List |
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no |
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1228 |
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Author |
Joubert E, |
Title |
Notes on the reproduction in Hartmann zebra in South West Africa |
Type |
Journal Article |
Year |
1974 |
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Madoqua |
Volume |
1 |
Issue |
8 |
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31-35 |
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Notes ![sorted by Notes field, descending order (down)](img/sort_desc.gif) |
from Professor Hans Klingels Equine Reference List |
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1229 |
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Author |
Joubert E,; atal, |
Title |
development of the Hartmann zebra |
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Journal Article |
Year |
1974 |
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Madoqua |
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8 |
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55-58 |
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Notes ![sorted by Notes field, descending order (down)](img/sort_desc.gif) |
from Professor Hans Klingels Equine Reference List |
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no |
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1230 |
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Author |
Klingel H, |
Title |
A comparison of the Social Behaviour of the Equidae. in Geist V & Walther FR (eds): The Behaviour of Ungulates and its Relation to Management |
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Journal Article |
Year |
1974 |
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IUCN Publ |
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124-132 |
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Notes ![sorted by Notes field, descending order (down)](img/sort_desc.gif) |
from Professor Hans Klingels Equine Reference List |
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no |
Call Number |
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1302 |
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