The processing of chimeric and dichotic emotional stimuli by connected and disconnected cerebral hemispheres

Prete, Giulia; Marzoli, Daniele; Brancucci, Alfredo; Fabri, Mara; Foschi, Nicoletta; Tommasi, Luca

doi:10.1016/j.bbr.2014.06.034

Cited by 29 publications

(12 citation statements)

References 67 publications

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“…If the research were to be done as a deductive inquiry to test the validity of the ETH, two life events should be identified, one associated with a strong primary-emotional memory and one associated with a strong social-emotional memory, before the patient undergoes a right-sided Wada test. There has also been some interesting research looking at emotional lateralization in patients who underwent partial or full surgical resection of their corpus callosums for control of intractable epilepsy [227,228]. However, the impetus for the research was based on validating the VH and/or RHH.…”

Section: Discussionmentioning

confidence: 99%

Differential Hemispheric Lateralization of Emotions and Related Display Behaviors: Emotion-Type Hypothesis

Ross

2021

Brain Sciences

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There are two well-known hypotheses regarding hemispheric lateralization of emotions. The Right Hemisphere Hypothesis (RHH) postulates that emotions and associated display behaviors are a dominant and lateralized function of the right hemisphere. The Valence Hypothesis (VH) posits that negative emotions and related display behaviors are modulated by the right hemisphere and positive emotions and related display behaviors are modulated by the left hemisphere. Although both the RHH and VH are supported by extensive research data, they are mutually exclusive, suggesting that there may be a missing factor in play that may provide a more accurate description of how emotions are lateralization in the brain. Evidence will be presented that provides a much broader perspective of emotions by embracing the concept that emotions can be classified into primary and social types and that hemispheric lateralization is better explained by the Emotion-type Hypothesis (ETH). The ETH posits that primary emotions and related display behaviors are modulated by the right hemisphere and social emotions and related display behaviors are modulated by the left hemisphere.

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Section: Discussionmentioning

confidence: 99%

Differential Hemispheric Lateralization of Emotions and Related Display Behaviors: Emotion-Type Hypothesis

Ross

2021

Brain Sciences

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“…There are some reports on postsurgical prosody processing showing specific impairments in subgroups of patients (Brierley et al, 2004 ; Dellacherie et al, 2011 ; Prete et al, 2014 ; Milesi et al, 2015 ). For example, after unilateral anterior temporal resection including the amygdala, Milesi and colleagues showed a general emotional prosody deficit in patients, regardless of the side of surgery.…”

Section: Brain Representation Of Prosody In Epilepsy: Post-surgical Smentioning

confidence: 99%

“…A recent report showed that a patient with partial callosotomy (only the anterior part of the callosum was cut) performed similarly than controls in a dichotic listening task, using syllables spoken with sad and happy prosody. On the contrary, a patient with complete callosotomy showed a left hemispheric superiority for emotional prosody processing in the same task (Prete et al, 2014 ). It is possible that partial callosotomy of the anterior portion does not impact on the performance on the task, as prosody comprehension nodes are more located in posterior areas, such as the temporo-parietal junction and the posterior part of the STG (Alba-Ferrara et al, 2011 , 2012 ).…”

Section: The Role Of Interhemispheric Crosstalk In Emotional Prosodymentioning

confidence: 99%

Emotional Prosody Processing in Epilepsy: Some Insights on Brain Reorganization

Alba-Ferrara

Kochen

Hausmann

2018

Front. Hum. Neurosci.

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Drug resistant epilepsy is one of the most complex, multifactorial and polygenic neurological syndrome. Besides its dynamicity and variability, it still provides us with a model to study brain-behavior relationship, giving cues on the anatomy and functional representation of brain function. Given that onset zone of focal epileptic seizures often affects different anatomical areas, cortical but limited to one hemisphere, this condition also let us study the functional differences of the left and right cerebral hemispheres. One lateralized function in the human brain is emotional prosody, and it can be a useful ictal sign offering hints on the location of the epileptogenic zone. Besides its importance for effective communication, prosody is not considered an eloquent domain, making resective surgery on its neural correlates feasible. We performed an Electronic databases search (Medline and PsychINFO) from inception to July 2017 for studies about prosody in epilepsy. The search terms included "epilepsy," "seizure," "emotional prosody," and "vocal affect." This review focus on emotional prosody processing in epilepsy as it can give hints regarding plastic functional changes following seizures (preoperatively), resection (post operatively), and also as an ictal sign enabling the assessment of dynamic brain networks. Moreover, it is argued that such reorganization can help to preserve the expression and reception of emotional prosody as a central skill to develop appropriate social interactions.

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“…This effect is observed by many studies (e.g., Bourne, 2010;Kumar and Srinivasan, 2011;Rahman and Anchassi, 2012;Innes et al, 2016;Damaskinou and Watling, 2018;Kajal et al, 2020;Hausmann et al, 2021). Nonetheless, some studies have observed left hemisphere dominance for one or more of these expressions under particular experimental conditions (Prete et al, 2014b(Prete et al, , 2015aBurt and Hausmann, 2019;Bublatzky et al, 2020;Lai et al, 2020;Stanković and Nešić, 2020). As such, regions within the left hemisphere may play a greater role in processing facial expressions than predicted by the RHH, VSH, or AWH theories.…”

Section: Introductionmentioning

confidence: 83%

Left Hemisphere Dominance for Negative Facial Expressions: The Influence of Task

Burgund

2021

Front. Hum. Neurosci.

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Major theories of hemisphere asymmetries in facial expression processing predict right hemisphere dominance for negative facial expressions of disgust, fear, and sadness, however, some studies observe left hemisphere dominance for one or more of these expressions. Research suggests that tasks requiring the identification of six basic emotional facial expressions (angry, disgusted, fearful, happy, sad, and surprised) are more likely to produce left hemisphere involvement than tasks that do not require expression identification. The present research investigated this possibility in two experiments that presented six basic emotional facial expressions to the right or left hemisphere using a divided-visual field paradigm. In Experiment 1, participants identified emotional expressions by pushing a key corresponding to one of six labels. In Experiment 2, participants detected emotional expressions by pushing a key corresponding to whether an expression was emotional or not. In line with predictions, fearful facial expressions exhibited a left hemisphere advantage during the identification task but not during the detection task. In contrast to predictions, sad expressions exhibited a left hemisphere advantage during both identification and detection tasks. In addition, happy facial expressions exhibited a left hemisphere advantage during the detection task but not during the identification task. Only angry facial expressions exhibited a right hemisphere advantage, and this was only observed when data from both experiments were combined. Together, results highlight the influence of task demands on hemisphere asymmetries in facial expression processing and suggest a greater role for the left hemisphere in negative expressions than predicted by previous theories.

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The processing of chimeric and dichotic emotional stimuli by connected and disconnected cerebral hemispheres

Cited by 29 publications

References 67 publications

Differential Hemispheric Lateralization of Emotions and Related Display Behaviors: Emotion-Type Hypothesis

Differential Hemispheric Lateralization of Emotions and Related Display Behaviors: Emotion-Type Hypothesis

Emotional Prosody Processing in Epilepsy: Some Insights on Brain Reorganization

Left Hemisphere Dominance for Negative Facial Expressions: The Influence of Task

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