Transcranial direct current stimulation over the medial prefrontal cortex and left primary motor cortex (MPFC-lPMC) affects subjective beauty but not ugliness

Koyo Nakamura, Hideaki Kawabata

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Neuroaesthetics has been searching for the neural bases of the subjective experience of beauty. It has been demonstrated that neural activities in the medial prefrontal cortex (mPFC) and the left primary motor cortex (lPMC) correlate with the subjective experience of beauty. Although beauty and ugliness seem to be semantically and conceptually opposite, it is still unknown whether these two evaluations represent extreme opposites in unitary or bivariate dimensions. In this study, we applied transcranial direct current stimulation (tDCS) to examine whether non-invasive brain stimulation modulates two types of esthetic evaluation; evaluating beauty and ugliness. Participants rated the subjective beauty and ugliness of abstract paintings before and after the application of tDCS. Application of cathodal tDCS over the mPFC with anode electrode over the lPMC, which induced temporal inhibition of neural excitability of the mPFC, led to a decrease in beauty ratings but not ugliness ratings. There were no changes in ratings of both beauty and ugliness when applying anodal tDCS or sham stimulation over the mPFC. Results from our experiment indicate that the mPFC and the lPMC have a causal role in generating the subjective experience of beauty, with beauty and ugliness evaluations constituting two distinct dimensions.

Original languageEnglish
Article number654
JournalFrontiers in Human Neuroscience
Volume9
Issue numberDEC
DOIs
Publication statusPublished - 2015 Dec 8
Externally publishedYes

Keywords

  • Esthetic evaluation
  • Left primary motor cortex
  • Medial prefrontal cortex
  • Neuroaesthetics
  • TDCS

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Neurology
  • Psychiatry and Mental health
  • Biological Psychiatry
  • Behavioral Neuroscience

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