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Functional neural correlates of facial affect recognition impairment following TBI

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Abstract

Facial affect recognition deficits following traumatic brain injury (TBI) have been well documented, as has their relationship with impairment in several other cognitive domains. However, little is known about the neurobiological mechanisms underlying affect recognition deficits, in particular mechanisms underlying different aspects of facial affect recognition (e.g., perceptual and interpretive processes). In the current study, 33 adults with moderate-to-severe TBI and 24 demographically matched healthy comparison (HC) participants completed an fMRI facial affect recognition study. While in the scanner, participants were asked to match the affect of a target face to either (a) one of two faces differing in affect (perceptual condition) or (b) one of two written affect labels (interpretative condition). In both groups we found activations in regions typically involved in affect recognition. Our results revealed that in the perceptual condition individuals with TBI tended to activate the left dorsolateral prefrontal cortex less than HCs, and within the HC group individuals with higher perceptual affect recognition scores showed higher levels of activation in the same brain region. Individuals with TBI who were specifically impaired at interpretative affect recognition showed less activation than HCs in the right fusiform gyrus. Moreover, in the labeling condition individuals with TBI tended to de-activate medial prefrontal regions less than HCs. A region of interest analysis revealed that individuals with TBI showed significantly less activation than HCs in the FFA for all the contrasts of interest. Our results suggest involvement of several brain regions in facial affect recognition impairment post TBI, and provide neurobiological support for the notion that distinct aspects of facial affect recognition can be differentially impaired following TBI.

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Funding

The study was funded by NICHD/NCMRR grant R01 HD071089, by an American Psychological Foundation Benton-Meier Fellowship, and by a pilot grant issued by the University of Iowa Magnetic Resonance Research Facility.

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Correspondence to Arianna Rigon.

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Arianna Rigon declares that she has no conflict of interest. Michelle Voss declares that she has no conflict of interest. Lyn Turkstra declares that she has no conflict of interest. Bilge Mutlu declares that he has no conflict of interest. Melissa Duff declares that she has no conflict of interest.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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Rigon, A., Voss, M.W., Turkstra, L.S. et al. Functional neural correlates of facial affect recognition impairment following TBI. Brain Imaging and Behavior 13, 526–540 (2019). https://doi.org/10.1007/s11682-018-9889-x

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  • DOI: https://doi.org/10.1007/s11682-018-9889-x

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