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

Articolo
Data di Pubblicazione:
2023
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.Temporo-occipital areas are involved in perceiving emotional faces. Here, the authors show that strengthening back-projections from temporal to occipital areas enhances visual cortex's response to face stimuli and perception of emotions from them.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
superior temporal sulcus (STS), face perception, emotion, transcranial magnetic stimulation (TMS), cortico-cortical paired associative stimulation (ccPAS)
Elenco autori:
Borgomaneri, Sara; Zanon, Marco; Di Luzio, Paolo; Cataneo, Antonio; Arcara, Giorgio; Romei, Vincenzo; Tamietto, Marco; Avenanti, Alessio
Autori di Ateneo:
TAMIETTO Marco
Link alla scheda completa:
https://iris.unito.it/handle/2318/1968270
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/1968270/1269848/s41467-023-41058-3.pdf
Pubblicato in:
NATURE COMMUNICATIONS
Journal
Progetto:
TAMIETTO M. - LIGHTUP - PROGETTO ERC - Grant n. 772953
  • Dati Generali
  • Aree Di Ricerca

Dati Generali

URL

10.1038/s41467-023-41058-3

Aree Di Ricerca

Settori (18)


LS5_18 - Innovative methods and tools for neuroscience - (2022)

LS5_5 - Neural networks and plasticity - (2022)

LS5_8 - Neural basis of behaviour - (2022)

LS5_9 - Neural basis of cognition - (2022)

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