Ambiguous emotion recognition in temporal lobe epilepsy: The role of expression intensity

Abstract

The nal publication is available at Springer via https://doi.org/10.3758/s13415-013-0153-y Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Running title: Ambiguous emotions recognition in TLE.Ambiguous emotion recognition in temporal lobe epilepsy: the role of expression intensity. AbstractThe lateralization of emotion processing is currently debated and may be further explored by examining facial expression recognition (FER) impairments in Temporal Lobe Epilepsy (TLE).Furthermore, in individuals with TLE there is debate whether FER deficits are more pronounced in right than left. To shed light on this issue, individuals with TLE were tested with a FER task designed to be more sensitive than those classically used. Twenty-five right and thirty-two left TLE patients, candidates for surgery, and controls underwent a FER task composed of stimulishown not only at full blown intensities (100%) but also morphed to display lower intensity levels (35%, 50%, 75%). Results show that, compared to controls, right TLE patients show deficits in the recognition of all emotional categories. Furthermore, when considering valence, right TLE patients are impaired only in negative emotions recognition, but no deficits for positive emotions have been highlighted in left TLE patients. Finally, only right TLE patients impairment was found to be related to the age of epilepsy onset. Our work demonstrates that FER deficits in TLE span across multiple emotional categories and manifest depending on the laterality of the epileptic focus. Taken together our findings provide strongest evidence for the Right Hemisphere Model, but also partial support for Valence Model. We suggest that actual models are not exhaustive to explain emotional processing cerebral control and that further multistep models should be developed.

Social information processing following resection of the insular cortex

“…A larger sample would be necessary to test for laterality effects in patients with insular damage more specifically, but these data suggest that the left insular injury may be associated with more severe impairments in social information processing. These results are discordant with the right-hemisphere hypothesis of emotion processing (Sedda et al, 2013;Yuvaraj et al, 2013), and with the results from a lesionmapping study involving over 100 patients, which showed that lesions in the right somatosensory-related cortices, including the insula, were associated with impaired recognition of emotions from human facial expressions (Adolphs et al, 2000). Nevertheless, a more recent, large voxel-based lesion-symptom mapping found that only the left insula was significantly involved in facial emotion recognition impairment following penetrating brain injury (Dal Monte et al, 2013).…”

Emotion recognition in temporal lobe epilepsy: A systematic review

“…The most commonly used face stimulus series were static black and white images from Ekman and Friesen (1976). In some studies 60 pictures were used (Calder et al, 1996;Reynders et al, 2005;Walpole et al, 2008;Sedda et al, 2013;Wendling et al, 2015), with 10 stimuli for each basic emotion (happiness, fear, anger, sadness, disgust, surprise). In other studies 24-42 facial expressions were used (Adolphs et al, 1995(Adolphs et al, , 2001Young et al, 1996;Anderson et al, 2000;Meletti et al, 2003aMeletti et al, ,b, 2009Benuzzi et al, 2004;Yamada et al, 2005;Shaw et al, 2007;Bonora et al, 2011), typically with four-five stimuli for each emotion.…”

Detecting facial emotion recognition deficits in schizophrenia using dynamic stimuli of varying intensities

“…In patient only studies, [22] reported that patients who scored high for psychopathy were found to have impaired recognition of sadness at low intensity compared to those with low psychopathy, whilst [59] found that violent schizophrenia patients were less able to assess the intensity of emotions than non-violent patients. As such, research investigating emotion intensity using static stimuli suggests that the intensity at which an emotion is expressed may influence a patient's ability to correctly identify that emotion [57].…”