Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

The neuronal correlate of a rare explicit bidirectional synesthesia was investigated with numerical and physical size comparison tasks using both functional magnetic resonance imaging and event-related potentials. Interestingly, although participant I.S. exhibited similar congruity effects for both tasks at the behavioral level, subsequent analyses of the imaging data revealed that different brain areas were recruited for each task, and in different time windows. The results support: (1) the genuineness of bidirectional synesthesia at the neuronal level, (2) the possibility that discrepancy in the neuronal correlates of synesthesia between previous studies might be task-related, and (3) the possibility that synesthesia might not be a unitary phenomenon.

Original publication

DOI

10.1162/jocn.2007.19.12.2050

Type

Journal article

Journal

J Cogn Neurosci

Publication Date

12/2007

Volume

19

Pages

2050 - 2059

Keywords

Adult, Brain, Brain Mapping, Case-Control Studies, Electroencephalography, Evoked Potentials, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Oxygen, Pattern Recognition, Visual, Perceptual Disorders, Photic Stimulation, Task Performance and Analysis