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- W4281777229 abstract "Abstract Non‐invasive, transcutaneous electrical stimulation of the auricular branch of the vagus nerve (taVNS) via the ear is used therapeutically in epilepsy, pain, and depression, and may also have beneficial effects on social cognition. However, the underlying mechanisms of taVNS are unclear and evidence regarding its role in social cognition improvement is limited. To investigate the impact of taVNS on social cognition we have studied its effects on gaze toward emotional faces in combination with eye‐tracking and on the release of the neuropeptide oxytocin which plays a key role in influencing social cognition and motivation. A total of 54 subjects were enrolled (49 were included in the final analysis) in a sham‐controlled, participant‐blind, crossover experiment, consisting of two treatment sessions 1 week apart. In one session participants received 30‐min taVNS (tragus), and in the other, they received 30‐min sham (earlobe) stimulation with the treatment order counterbalanced. The proportion of time spent viewing the faces and facial features (eyes, nose, and mouth) was measured together with resting pupil size. Additionally, saliva samples were taken for the measurement of oxytocin concentrations by enzyme‐linked immunoassay. Saliva oxytocin concentrations increased significantly after taVNS compared to sham stimulation, while resting pupil size did not. In addition, taVNS increased time spent viewing the nose region irrespective of face emotion, and this was positively correlated with increased saliva oxytocin concentrations. Our findings suggest that taVNS biases visual attention toward socially salient facial features across different emotions and this is associated with its effects on increasing endogenous oxytocin release." @default.
- W4281777229 created "2022-06-13" @default.
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- W4281777229 date "2022-05-31" @default.
- W4281777229 modified "2023-10-02" @default.
- W4281777229 title "Transcutaneous auricular vagus nerve stimulation increases eye‐gaze on salient facial features and oxytocin release" @default.
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- W4281777229 doi "https://doi.org/10.1111/psyp.14107" @default.
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