Brain asymmetry (animal)

Vallortígara, Giorgio; Chiandetti, Cinzia; Sovrano, Valeria Anna

doi:10.1002/wcs.100

Cited by 196 publications

(145 citation statements)

References 87 publications

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“…Thus, for chicks, it can be clearly asserted that no environmental triggering is necessary either for dealing with geometry or for attributing differential reliability to multiple sources of information. Although it can be argued that animals were unavoidably exposed to geometry while learning the task, chicks were shown to behave identically between early training and subsequent test conditions (Vallortigara, Sovrano & Chiandetti, 2009). In conclusion, rearing exposure does not interfere with animals' ability to encode geometry.…”

Section: Geometrymentioning

confidence: 99%

Rudiments of mind: Insights through the chick model on number and space cognition in animals.

Vallortígara¹,

Regolin²,

Chiandetti³

et al. 2010

CCBR

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Studies on human infants, focused on the ontogenetic origins of knowledge, have provided evidence for a small set of separable systems of core knowledge dealing with the representation of objects, number, and space. We investigated core knowledge systems from a comparative perspective, making use of the domestic chick as a model system, and filial imprinting as a key to animal mind. Here, we discuss evidence showing precocious abilities in the chick for representing: (i) the cardinal and ordinal/sequential aspects of numerical cognition, and (ii) the distance, angle, and sense relations among extended surfaces in the surrounding layout. Some of the abilities associated with core knowledge systems of number and space were observed in the absence of (or with very reduced) visual experience, supporting a nativistic account of the origins of knowledge.

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Section: Geometrymentioning

confidence: 99%

Rudiments of mind: Insights through the chick model on number and space cognition in animals.

Vallortígara¹,

Regolin²,

Chiandetti³

et al. 2010

CCBR

Self Cite

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“…In vertebrates, the right brain hemisphere (which processes information obtained by the left eye) is thought to control emotions and spatial perception, while the left hemisphere (right eye) is responsible for attention, perceptual processing and the control of motor responses (Rogers, Vallortigara, & Andrew, 2013;Vallortigara, Chiandetti, & Sovrano, 2011). Therefore, it has been suggested that lateralized eye use increases brain efficiency, because visual information coming from each eye is processed by different brain regions (Ghirlanda & Vallortigara, 2004;Vallortigara & Rogers, 2005).…”

Section: Introductionmentioning

confidence: 99%

Lateralized Eye Use Towards Video Stimuli in Bearded Dragons (Pogona vitticeps)

Frohnwieser¹,

Pike²,

Murray³

et al. 2017

AB&C

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Lateralized eye use is thought to increase brain efficiency, as the two hemispheres process different information perceived by the eyes. It has been observed in a wide variety of vertebrate species and, in general, information about conspecifics appear to elicit a left eye preference whilst information about prey elicits the opposite. In reptiles, this phenomenon has only been investigated using live conspecifics in agonistic contexts, and so it is not clear whether it can be found when using video stimuli. Here, bearded dragons (Pogona vitticeps) were presented with videos of female conspecifics and prey that either moved or were stationary, along with a control video of an empty background.Females exhibited a left eye bias towards conspecifics but males did not, however, both sexes looked at conspecifics significantly longer than prey. Further, animals used their left eye significantly longer when viewing moving stimuli of both categories. These results suggest that, in lizards, lateralized eye use when viewing conspecifics may be controlled by sex, and strongly influenced by stimulus movement. This study therefore provides important insights into the role of lateralized processing in lizard perception, and sets the scene for future work investigating the role of sex on perception of conspecifics and the role of motion in lateralized eye use.

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“…For vertebrates, we know that many individuals differentially use one side of their body or either of the bilateral organs or limbs [3], a phenomenon known as behavioural lateralization [4][5][6]. Differences in lateralization between any given individual and the majority of its groupmates may represent a major source of conflict and hence may be the source of differential costs and benefits for members of the group.…”

Section: Introductionmentioning

confidence: 99%

At odds with the group: changes in lateralization and escape performance reveal conformity and conflict in fish schools

et al. 2016

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Many vertebrates are known to show behavioural lateralization, whereby they differentially use one side of their body or either of their bilateral organs or limbs. Behavioural lateralization often manifests in a turning bias in fishes, with some individuals showing a left bias and others a right bias. Such biases could be the source of considerable conflict in fish schools given that there may be considerable social pressure to conform to the group to maintain effective group evasion. Here, we show that predation pressure is a major determinant of the degree of lateralization, both in a relative and absolute sense, in yellow-and-blueback fusiliers (Caesio teres), a schooling fish common on coral reefs. Wild-caught fish showed a bias for right turning. When predation pressure was experimentally elevated or relaxed, the strength of lateralization changed. Higher predation pressure resulted in an increase in the strength of lateralization. Individuals that exhibited the same turning bias as the majority of individuals in their group had improved escape performance compared with individuals that were at odds with the group. Moreover, individuals that were right-biased had improved escape performance, compared with left-biased ones. Plasticity in lateralization might be an important evolutionary consequence of the way gregarious species respond to predators owing to the probable costs associated with this behaviour.

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Brain asymmetry (animal)

Cited by 196 publications

References 87 publications

Rudiments of mind: Insights through the chick model on number and space cognition in animals.

Rudiments of mind: Insights through the chick model on number and space cognition in animals.

Lateralized Eye Use Towards Video Stimuli in Bearded Dragons (Pogona vitticeps)

At odds with the group: changes in lateralization and escape performance reveal conformity and conflict in fish schools

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