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Higher anxiety rating does not mean poor speech performance: dissociation of the neural mechanisms of anticipation and delivery of public speaking

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Abstract

Public speaking anxiety refers to feelings of nervousness when anticipating or delivering a speech. However, the relationship between anxiety in the anticipation phase and speech delivery phase is unclear. In this study, we used functional near-infrared spectroscopy to record participants’ brain activities when they were anticipating or performing public speaking tasks in an immersive virtual reality environment. Neuroimaging results showed that participants’ subjective ratings of public anxiety in the anticipation phase but not the delivery phase were correlated with activities in the dorsolateral prefrontal cortex, the inferior frontal gyrus, and the precentral and postcentral gyrus. In contrast, their speaking performance could be predicted by activities in the temporal gyrus and the right postcentral gyrus in the delivery phase. This suggests a dissociation in the neural mechanisms between anxiety in preparation and execution of a speech. The conventional anxiety questionnaire is a good predictor of anticipatory anxiety, but cannot predict speaking performance. Using virtual reality to establish a situational test could be a better approach to assess in vivo public speaking performance.

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Acknowledgments

We appreciate Zi-Rui Xu for her help with data collection and Ming Han for his help with stimulus generation.

Funding

This research was sponsored by the National Natural Science Foundation of China Grants (No. 31771209), the National Social Science Foundation of China Grants (No. 15ZDB016), and the Peak Discipline Construction Project of Education at East China Normal University: “Fundamental Research Funds for the Central Universities” and the Basic Research Project of Shanghai Science and Technology Commission (Grants 19JC1410101).

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S.-G. K., Q.L., Y.- Y. He., H.-N.WU. designed the research. Y.-Y. He. and Q.L. collected the experimental data; Q.L. and Y.-Y. He. analyzed the data under the supervision of S.-G. K; S.-G.K. and Q.L. wrote the paper.

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Correspondence to Shu-Guang Kuai.

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This research complied with the tenets of the Declaration of Helsinki and was approved by the ethics committee of East China Normal University. Informed consent was obtained from each participant before data collection. Participants and were paid for their participation.

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Kuai, SG., Liang, Q., He, YY. et al. Higher anxiety rating does not mean poor speech performance: dissociation of the neural mechanisms of anticipation and delivery of public speaking. Brain Imaging and Behavior 15, 1934–1943 (2021). https://doi.org/10.1007/s11682-020-00387-3

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