Limits of intraocular and interocular transfer in pigeons

Ortega, Laura; Stoppa, Katrin; Güntürkün, Onur; Troje, Nikolaus F.

doi:10.1016/j.bbr.2008.04.022

Cited by 14 publications

(11 citation statements)

References 39 publications

(70 reference statements)

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“…In pigeons ( Columbia livia ), the visual field for each eye can be divided into two regions: the red field, which is the lower frontal region important for guiding pecking, and the yellow field, which covers the upper frontal and lateral regions. There can be interocular transfer between the red fields of each eye, but there seems to be no interocular transfer between the yellow fields in nearly all individuals [ 44 ]. Some particular individuals can do it, but no one knows why [ 44 ].…”

Section: Integration At a Time (Unity)mentioning

confidence: 99%

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Dimensions of Animal Consciousness

Birch

Schnell

Clayton

2020

Trends in Cognitive Sciences

186

137

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How does consciousness vary across the animal kingdom? Are some animals ‘more conscious’ than others? This article presents a multidimensional framework for understanding interspecies variation in states of consciousness. The framework distinguishes five key dimensions of variation: perceptual richness, evaluative richness, integration at a time, integration across time, and selfconsciousness. For each dimension, existing experiments that bear on it are reviewed and future experiments are suggested. By assessing a given species against each dimension, we can construct a consciousness profile for that species. On this framework, there is no single scale along which species can be ranked as more or less conscious. Rather, each species has its own distinctive consciousness profile.

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Section: Integration At a Time (Unity)mentioning

confidence: 99%

“…There can be interocular transfer between the red fields of each eye, but there seems to be no interocular transfer between the yellow fields in nearly all individuals [ 44 ]. Some particular individuals can do it, but no one knows why [ 44 ].…”

Section: Integration At a Time (Unity)mentioning

confidence: 99%

Dimensions of Animal Consciousness

Birch

Schnell

Clayton

2020

Trends in Cognitive Sciences

186

137

View full text Add to dashboard Cite

show abstract

“…Dolphins only have a small binocular field of view (McCormick, 1969;McCormick, 2007). Furthermore, with similar lateral eye positions, rabbits and pigeons sometimes fail to transfer information learned in one eye to the other (de Vos-Korthals and Van Hof, 1983;Graves and Goodale, 1977;Jimanez Ortega et al, 2008). Although dolphin pupils respond consensually to bright light presented unilaterally (Lyamin et al, 2008), dolphin eyes may move independently, one orienting backward while the other orients forward (McCormick, 1969), and measured eye movements are slow (Dawson et al, 1981 S. Ridgway and others …”

Section: Dolphins Exhibited Rapid Inter-ocular Transfer Of Learned DImentioning

confidence: 99%

Dolphins maintain cognitive performance during 72 to 120 hours of continuous auditory vigilance

Ridgway

Keogh

Carder

et al. 2009

Journal of Experimental Biology

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“…Most birds also have laterally placed eyes with only a small binocular overlap [11]. Birds scrutinize objects mostly with their lateral monocular visual field before deciding to approach and peck [12]. Thus, response selection is mostly performed under conditions of unilateral visual input.…”

Section: Introductionmentioning

confidence: 99%

When One Hemisphere Takes Control: Metacontrol in Pigeons (Columba livia)

Adam

Güntürkün

2009

PLoS ONE

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BackgroundVertebrate brains are composed of two hemispheres that receive input, compute, and interact to form a unified response. How the partially different processes of both hemispheres are integrated to create a single output is largely unknown. In some cases one hemisphere takes charge of the response selection – a process known as metacontrol. Thus far, this phenomenon has only been shown in a handful of studies with primates, mostly conducted in humans. Metacontrol, however, is even more relevant for animals like birds with laterally placed eyes and complete chiasmatic decussation since visual input to the hemispheres is largely different.Methodology/Principal FindingsHoming pigeons (Columba livia) were trained with a color discrimination task. Each hemisphere was trained with a different color pair and therefore had a different experience. Subsequently, the pigeons were binocularly examined with two additional stimuli that combined the positive color of one hemisphere with a negative color that had been shown to the other, omitting the availability of a coherent solution and confronting the pigeons with a conflicting situation. Some of the pigeons responded to both stimuli, indicating that none of the hemispheres dominated the overall preference. Some birds, however, responded primarily to one of the conflicting stimuli, showing that they based their choice on the left- or right-monocularly learned color pair, indicating hemispheric metacontrol.Conclusions/SignificanceWe could demonstrate for the first time that metacontrol is a widespread phenomenon that also exists in birds, and thus in principle requires no corpus callosum. Our results are closely similar to those in humans: monocular performance was higher than binocular one and animals displayed different modes of hemispheric dominance. Thus, metacontrol is a dynamic and widely distributed process that possibly constitutes a requirement for all animals with a bipartite brain to confront the problem of choosing between two hemisphere-bound behavioral options.

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Limits of intraocular and interocular transfer in pigeons

Cited by 14 publications

References 39 publications

Dimensions of Animal Consciousness

Dimensions of Animal Consciousness

Dolphins maintain cognitive performance during 72 to 120 hours of continuous auditory vigilance

When One Hemisphere Takes Control: Metacontrol in Pigeons (Columba livia)

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