Work

EEG investigation of developmental auditory–visual synesthesia: a case report

Year: 2026

Type: article

Abstract: We present a case of developmental auditory–visual synesthesia and its neurophysiological investigation in a female patient in her late teens. She began experiencing persistent positive visual phenomena at age 14, followed by the development of auditory–visual synesthesia. Neurophysiological assessment was conducted using EEG testing. In this study, we focus on the resting EEG and its relationship to colored hearing synesthesia. During music performance, visual EEG inspection revealed a sequential frequency acceleration shifting from the left temporal regions (auditory cortex) to the left centroparietal regions at the onset of color perception, supporting the two-stage hyperbinding model of synesthesia.

Source: Journal of Rare Diseases

DOI: 10.1007/s44162-026-00210-5

Authors: Taylan Yavuz Bulut, Hakan Emre Ziyagil, Mahmut Ali Osman Eryılmaz

Institutions: Niğde Ömer Halisdemir Üniversitesi, Adnan Menderes University

Language: English

Topic: Multisensory perception and integration

Subfield: Experimental and Cognitive Psychology

Field: Psychology

Domain: Social Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W7165123153