Journal
CEREBRAL CORTEX
Volume 25, Issue 11, Pages 4334-4340Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/cercor/bhv016
Keywords
brain stimulation; face perception; facial identity; transcranial current stimulation; transcranial random noise stimulation
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Funding
- British Academy [SG111874]
- ESRC [ES/K00882X/1]
- Wellcome Trust Biomedical Vacation Scholarship [WT102340MA]
- RCUK (ESRC) Open Access Block Grant (Goldsmiths)
- ESRC [ES/K00882X/1] Funding Source: UKRI
- Economic and Social Research Council [ES/K00882X/1] Funding Source: researchfish
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Recently, a number of studies have demonstrated the utility of transcranial current stimulation as a tool to facilitate a variety of cognitive and perceptual abilities. Few studies, though, have examined the utility of this approach for the processing of social information. Here, we conducted 2 experiments to explore whether a single session of high-frequency transcranial random noise stimulation (tRNS) targeted at lateral occipitotemporal cortices would enhance facial identity perception. In Experiment 1, participants received 20 min of active high-frequency tRNS or sham stimulation prior to completing the tasks examining facial identity perception or trustworthiness perception. Active high-frequency tRNS facilitated facial identity perception, but not trustworthiness perception. Experiment 2 assessed the spatial specificity of this effect by delivering 20 min of active high-frequency tRNS to lateral occipitotemporal cortices or sensorimotor cortices prior to participants completing the same facial identity perception task used in Experiment 1. High-frequency tRNS targeted at lateral occipitotemporal cortices enhanced performance relative to motor cortex stimulation. These findings show that high-frequency tRNS to lateral occipitotemporal cortices produces task-specific and site-specific enhancements in face perception.
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