Cortical activity involved in perception and imagery of visual stimuli in a subject with aphantasia. An EEG case report

Mariano Furman, Pablo Fleitas-Rumak, Pilar Lopez-Segura, Martín Furman, Gustavo Tafet, Gabriel A. de Erausquin, Tomás Ortiz

Research output: Contribution to journalArticlepeer-review

Abstract

Aphantasia has been described as the inability to voluntarily evoke mental images using the “mind’s eye.” We studied a congenital aphantasic subject using neuropsychological testsand 64 channel EEG recordings, in order to studycortical activity involved in perception and imagery evaluating event-related potentials(N170, P200, N250). The subject is in the normal range of the neuropsychological tests performed, except for specific imagery tests. The EEG results show that when he evokes the same mental image, he starts the evoking process from left temporal instead of frontal areas, he does not activate occipital visual nor left anterior parietal areas.

Original languageEnglish (US)
Pages (from-to)344-355
Number of pages12
JournalNeurocase
Volume28
Issue number4
DOIs
StatePublished - 2022

Keywords

  • Aphantasia
  • EEG
  • ERP
  • mental imagery
  • visual imagery

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Clinical Neurology

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