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Increasing associative plasticity in temporo-occipital back-projections improves visual perception of emotions

Author

Listed:
  • Sara Borgomaneri

    (Alma Mater Studiorum Università di Bologna, Cesena Campus)

  • Marco Zanon

    (Alma Mater Studiorum Università di Bologna, Cesena Campus
    International School for Advanced Studies (SISSA))

  • Paolo Di Luzio

    (Alma Mater Studiorum Università di Bologna, Cesena Campus)

  • Antonio Cataneo

    (Alma Mater Studiorum Università di Bologna, Cesena Campus)

  • Giorgio Arcara

    (IRCCS San Camillo Hospital)

  • Vincenzo Romei

    (Alma Mater Studiorum Università di Bologna, Cesena Campus
    Universidad Antonio de Nebrija)

  • Marco Tamietto

    (Università degli Studi di Torino
    Tilburg University)

  • Alessio Avenanti

    (Alma Mater Studiorum Università di Bologna, Cesena Campus
    Universidad Católica del Maule)

Abstract

The posterior superior temporal sulcus (pSTS) is a critical node in a network specialized for perceiving emotional facial expressions that is reciprocally connected with early visual cortices (V1/V2). Current models of perceptual decision-making increasingly assign relevance to recursive processing for visual recognition. However, it is unknown whether inducing plasticity into reentrant connections from pSTS to V1/V2 impacts emotion perception. Using a combination of electrophysiological and neurostimulation methods, we demonstrate that strengthening the connectivity from pSTS to V1/V2 selectively increases the ability to perceive facial expressions associated with emotions. This behavior is associated with increased electrophysiological activity in both these brain regions, particularly in V1/V2, and depends on specific temporal parameters of stimulation that follow Hebbian principles. Therefore, we provide evidence that pSTS-to-V1/V2 back-projections are instrumental to perception of emotion from facial stimuli and functionally malleable via manipulation of associative plasticity.

Suggested Citation

  • Sara Borgomaneri & Marco Zanon & Paolo Di Luzio & Antonio Cataneo & Giorgio Arcara & Vincenzo Romei & Marco Tamietto & Alessio Avenanti, 2023. "Increasing associative plasticity in temporo-occipital back-projections improves visual perception of emotions," Nature Communications, Nature, vol. 14(1), pages 1-15, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41058-3
    DOI: 10.1038/s41467-023-41058-3
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    References listed on IDEAS

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    2. Domenica Veniero & Joachim Gross & Stephanie Morand & Felix Duecker & Alexander T. Sack & Gregor Thut, 2021. "Top-down control of visual cortex by the frontal eye fields through oscillatory realignment," Nature Communications, Nature, vol. 12(1), pages 1-13, December.
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