Right hemisphere dominance for emotion processing in baboons

Wallez, Catherine; Vauclair, Jacques

doi:10.1016/j.bandc.2010.11.004

Cited by 42 publications

(41 citation statements)

References 47 publications

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“…They found that right ear temperature increased in captive chimpanzees when they were watching emotional videos, consistent with greater right hemisphere involvement (Parr and Hopkins, 2000). The rightward hemisphere bias documented in chimpanzees is also found in other species such as baboons or mangabeys during natural interactions, as evidenced by studies investigating the perception of visual emotional stimuli (Baraud et al, 2009;Casperd and Dunbar, 1996;Morris and Hopkins, 1993;Wallez and Vauclair, 2011).…”

Section: Lateralization Of the Brain For Vocal And Emotional Processimentioning

confidence: 70%

A comparative neurological approach to emotional expressions in primate vocalizations

Gruber

Grandjean

2017

Neuroscience & Biobehavioral Reviews

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a b s t r a c tDifferent approaches from different research domains have crystallized debate over primate emotional processing and vocalizations in recent decades. On one side, researchers disagree about whether emotional states or processes in animals truly compare to those in humans. On the other, a long-held assumption is that primate vocalizations are innate communicative signals over which nonhuman primates have limited control and a mirror of the emotional state of the individuals producing them, despite growing evidence of intentional production for some vocalizations. Our goal is to connect both sides of the discussion in deciphering how the emotional content of primate calls compares with emotional vocal signals in humans. We focus particularly on neural bases of primate emotions and vocalizations to identify cerebral structures underlying emotion, vocal production, and comprehension in primates, and discuss whether particular structures or neuronal networks solely evolved for specific functions in the human brain. Finally, we propose a model to classify emotional vocalizations in primates according to four dimensions (learning, control, emotional, meaning) to allow comparing calls across species.

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Section: Lateralization Of the Brain For Vocal And Emotional Processimentioning

confidence: 70%

A comparative neurological approach to emotional expressions in primate vocalizations

Gruber

Grandjean

2017

Neuroscience & Biobehavioral Reviews

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“…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: 84%

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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“…Recent hypotheses suggest that the right hemisphere could control the perception and expression of emotions, whereas the left hemisphere could regulate emotional valence. Furthermore, it has been suggested that the right and left hemispheres could be involved in negative and positive emotions, respectively (Wallez and Vauclair 2011). Importantly, the dominance of the right hemisphere for anxiety and anxiety-related processes has been also widely reported in literature (Kühn et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Functional and neurochemical interactions within the amygdala–medial prefrontal cortex circuit and their relevance to emotional processing

et al. 2016

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The amygdala–medial prefrontal cortex (mPFC) circuit plays a key role in emotional processing. GABA-ergic inhibition within the mPFC has been suggested to play a role in the shaping of amygdala activity. However, the functional and neurochemical interactions within the amygdala–mPFC circuits and their relevance to emotional processing remain unclear. To investigate this circuit, we obtained resting-state functional magnetic resonance imaging (rs-fMRI) and proton MR spectroscopy in 21 healthy subjects to assess the potential relationship between GABA levels within mPFC and the amygdala–mPFC functional connectivity. Trait anxiety was assessed using the State-Trait Anxiety Inventory (STAI-Y2). Partial correlations were used to measure the relationships among the functional connectivity outcomes, mPFC GABA levels and STAI-Y2 scores. Age, educational level and amount of the gray and white matters within 1H-MRS volume of interest were included as nuisance variables. The rs-fMRI signals of the amygdala and the vmPFC were significantly anti-correlated. This negative functional coupling between the two regions was inversely correlated with the GABA+/tCr level within the mPFC and the STAI-Y2 scores. We suggest a close relationship between mPFC GABA levels and functional interactions within the amygdala-vmPFC circuit, providing new insights in the physiology of emotion.

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Right hemisphere dominance for emotion processing in baboons

Cited by 42 publications

References 47 publications

A comparative neurological approach to emotional expressions in primate vocalizations

A comparative neurological approach to emotional expressions in primate vocalizations

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

Functional and neurochemical interactions within the amygdala–medial prefrontal cortex circuit and their relevance to emotional processing

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