Fuzzy cluster analysis of fMRI data on memory consolidated through elaborative rehearsal by the method of loci

Author

Ichihashi, Hidetomo ; Honda, Katsuhiro ; Takai, Yuji ; Araki, Shoichi

Author_Institution

Osaka Prefecture Univ., Japan

fYear

2003

fDate

20-22 Oct. 2003

Firstpage

132

Lastpage

133

Abstract

A brain mapping in recalling long term memories consolidated by a mnemonic called the method of loci was carried out using fMRI experiments. A Japanese subject memorized 2000 English sentences, each of which consisted of about 10 words, during the last three years. The brain images when the subject was recalling the sentences were acquired in the activation and baseline epochs. The fMRI signals were analyzed using SPM99 and a modified fuzzy c-means clustering. The clustering results revealed the functional specialization of Broker´s area and visual area. Broader areas in visual cortex are detected.

Keywords

biomedical MRI; brain; fuzzy set theory; medical image processing; neurophysiology; pattern clustering; statistical analysis; Broker area; SPM99; activation epochs; baseline epochs; brain images; brain mapping; elaborative rehearsal; fMRI data; fuzzy c-means clustering; fuzzy cluster analysis; loci method; long term memories; memory recall; mnemonic; visual area; visual cortex; Brain mapping; Data analysis; Globalization; Insulation; Linear regression; Magnetic resonance imaging; Natural languages; Prototypes; Signal analysis; Speech analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering, 2003. IEEE EMBS Asian-Pacific Conference on

Print_ISBN

0-7803-7943-8

Type

conf

DOI

10.1109/APBME.2003.1302619

Filename

1302619