Functional asymmetry of emotions in primates: new findings in chimpanzees

Fernández-Carriba, Samuel; Loeches, Angela; Morcillo, Ana; Hopkins, William D.

doi:10.1016/s0361-9230(01)00685-2

Cited by 48 publications

(51 citation statements)

References 11 publications

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“…Within this context, exposing the left side of the body to conspecifics might be advantageous during novel or urgent situations to execute physical behaviors for protection and locomotion escape behaviors. In the second instance, the left side of the face in non-human primates has been reported to display emotive expression both earlier and more intensely than the right side of the face (Fernández-Carriba et al, 2002;Hauser, 1993;Hook-Costigan & Rogers, 1998). This lateral positioning may reflect a strategy to clearly display arousal status in order to inhibit extreme aggressive behavioral responses (Baraud et al, 2009).…”

Section: Discussionmentioning

confidence: 91%

“…looking time of centrally presented faces) has been reported in: sheep (Peirce, Leigh, & Kendrick, 2000), dogs and rhesus monkeys (Guo, Meints, Hall, Hall, & Mills, 2009), chimpanzees (Morris & Hopkins, 1993), and humans (behavioral study : Burt & Perret, 1997;neuro-imaging: Kanwisher, Tong, & Nakayama, 1998). A left motor bias (right hemisphere dominance) has also been reported for the production of facial expressions in marmosets (Hook-Costigan & Rogers, 1998) macaques (Hauser, 1993), baboons (Wallez & Vauclair, 2011) and in chimpanzees (Fernández-Carriba, Loeches, Morcillo, & Hopkins, 2002), indicating that both the perception and production of emotions may be preferentially controlled by the right hemisphere.…”

Section: Introductionmentioning

confidence: 83%

“…High-ranking chimpanzees were approached significantly more frequently from their left visual hemifield suggesting the facilitation for the rapid identification of facial expressions and predictability of behaviors by the right hemisphere (Fernández-Carriba et al, 2002). Left biased motor asymmetries have also been associated with self-directed behaviors.…”

Section: Introductionmentioning

confidence: 98%

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Social environment elicits lateralized navigational paths in two populations of typically developing children

Forrester

Crawley

Palmer

2014

Brain and Cognition

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a b s t r a c tThe current study provides the first evidence of human lateralized navigation of a social space within a naturalistic environment. We employed a quantitative, observational approach and report on a detailed set of nearly 700 independent navigational routes from two separate child populations consisting of over 300 typically developing children, aged five to fourteen years. The navigational path was considered across the sagittal plane (left, right) around three distinct target types (peer, adult and object). Both child populations expressed a significant bias for choosing a rightward navigational path around a human target (e.g. peer, adult) and no lateral preference for navigation around fixed, inanimate objects. A rightward navigational path provides an advantage for the left visual field and the right hemisphere, facilitating both the production and perception of social-emotion stimuli. The findings are consistent with evidence from studies of non-human animal species demonstrating that the social environment elicits predictable lateralized behavior, and support an early evolutionary delineation of functional processing by the two hemispheres.

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Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 98%

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Social environment elicits lateralized navigational paths in two populations of typically developing children

Forrester

Crawley

Palmer

2014

Brain and Cognition

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“…The role of the right hemisphere is an additional potential explanation for left-handed imitative movements. The right hemisphere is dominant in emotional and face processing (44,45), and emotional facial expressions in humans (46) and in chimpanzees (47) are also stronger on the left side. Thus, right hemisphere dominance for a hand gesture may suggest that neonatal imitation is not a simple isopraxism but a motivated expressive behavior.…”

Section: Finger Movement Imitation In Neonatesmentioning

confidence: 99%

Index Finger Movement Imitation by Human Neonates: Motivation, Learning, and Left-Hand Preference

et al. 2005

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Imitation of a fine motor movement, index finger protrusion, was examined in 39 neonates using an ethologically based objective coding system. Results confirmed that imitation of finger movements exists, and infants demonstrated "learning" as imitation developed through an incomplete imitation stage. Neonatal imitation was more frequently left-handed, an early sign of laterality in motivation to be investigated further. The existence of index finger imitation in human neonates indicates that volitional control of individuated finger movements develops much earlier than previously thought. The differential increase of index finger protrusion movements during the imitation periods suggests that this behavior is not an automatic response triggered by general arousal but instead is a true indicator of purposeful neonatal imitation. The cognitive developmental approach in the first half of the 20th century (1) assumed that imitation of observed actions occurs at the earliest from 10 -12 mo of age, based on learning and experience. Since the 1970s, a series of studies (2-9) has confirmed that infants even as young as a few hours old can imitate proprioceptively guided behaviors. Despite these findings, neonatal imitation remained a controversial "fuzzy phenomenon" (10). Several studies failed to replicate the phenomenon (11-14), and it was even regarded as artefact by some researchers (15). The confusion about neonatal imitation in part originates from the fact that most movements of neonates were regarded as unintentional until Van der Meer et al. (16) showed that newborn infants can purposefully control their arm resistance against small forces. Recent research showed that most neonatal behaviors, including neonatal reflexes, such as rooting, sucking, and imitation, are flexible and goal-directed behaviors (17). Nagy and Molnar (18,19) reported that neonates not only are able to imitate tongue protrusion gestures but also started to initiate the previously imitated gestures and to engage in long-lasting imitation/initiation "conversation" with the experimenter. Imitations and initiations were coupled with opposite heart rate changes during these dialogues and may indicate a prospective control of a new movement (heart rate increase during imitations) and an attention to an expected reply (heart rate decrease during initiations).Imitation is still lacking an ethologic, and neurophysiologic description in neonates. Why newborn infants imitate and how they can do it are still unanswered questions, although various models have been proposed. Imitation has been described as an unconditioned reflex, a circular reaction (20) or a secondary circular reaction (1), and as an innate releasing mechanism (21). It has been explained as a product of associative learning (22) or instrumental learning (23). Recent explanations include the theory of intermodal mapping (3,24) and the mirror neuron system model (25,26). Although these models successfully explain several aspects of neonatal imitation, none of them is able to describe ...

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“…What was once considered a uniquely human characteristic since being described by Broca (1865), brain lateralization and its behavioural effects has been found and studied in a wide range of species, including non-human primates (e.g. Fernandez-Carriba et al 2002), birds (e.g. Rogers 1997), amphibians ( Vallortigara et al 1998), fishes (e.g.…”

Section: Introductionmentioning

confidence: 99%

Lateralization of social cognition in the domestic chicken (Gallus gallus)

Daisley

Mascalzoni

Rosa‐Salva

et al. 2008

Phil. Trans. R. Soc. B

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In this paper, we report on the ongoing work in our laboratories on the effect of lateralization produced by light exposure in the egg on social cognition in the domestic chick (Gallus gallus). The domestic chick possesses a lateralized visual system. This has effects on the chick's perception towards and interaction with its environment. This includes its ability to live successfully within a social group. We show that there is a tendency for right brain hemisphere dominance when performing social cognitive actions. As such, chicks show a left hemispatial bias for approaching a signalled target object, tend to perceive gaze and faces of human-like masks more effectively when using their left eye, are able to inhibit a pecking response more effectively when viewing a neighbour tasting a bitter substance with their left eye, and are better able to perform a transitive inference task when exposed to light in the egg and when forced to use their left eye only compared to dark-hatched or right eye chicks. Some of these effects were sex specific, with male chicks tending to show an increased effect of lateralization on their behaviours. These data are discussed in terms of overall social cognition in group living.

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Functional asymmetry of emotions in primates: new findings in chimpanzees

Cited by 48 publications

References 11 publications

Social environment elicits lateralized navigational paths in two populations of typically developing children

Social environment elicits lateralized navigational paths in two populations of typically developing children

Index Finger Movement Imitation by Human Neonates: Motivation, Learning, and Left-Hand Preference

Lateralization of social cognition in the domestic chicken (Gallus gallus)

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