Recovery process of colour naming defects in pure alexia - A five year longitudinal experimental study

Kazuyoshi Fukuzawa, Sumiko Sasanuma, Itaru Tatsumi, Tsutomu Suzuki, Yoko Fukusako

Research output: Contribution to journalArticle

Abstract

The present study investigated the recovery process of colour naming defects and the ability for matching seen colour to colour name given verbally (colour pointing) in a patient with pure alexia (M.S.). The recovery process of the patient's ability to process the physical parameters involved in colour information processing was also examined. To look at how M.S. processed the physical parameters, the similarity judgment tasks of internal representation of colour generated by verbal and visual stimuli were employed. While colour pointing ability became practically normal 22 months postonset, colour naming defects took longer to recover. The analysis of the results of similarity judgment using multidimensional scaling revealed that: (1) verbal stimuli generated consistently more stable internal representation of colour than visual stimuli; and (2) colour information processing of M.S. altered 'hue with lightness' dependent to more 'hue' dependent in the 5 years since the onset of illness. The underlying neuropsychological mechanism was discussed for these findings.

Original languageEnglish
Pages (from-to)267-282
Number of pages16
JournalAphasiology
Volume12
Issue number3
Publication statusPublished - 1998 Mar

Fingerprint

Pure Alexia
Longitudinal Studies
stimulus
Color
information processing
ability
multidimensional scaling
Aptitude
illness
Automatic Data Processing
Naming
Defects
Recovery
Experimental Study
Physical Phenomena
Names

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology

Cite this

Fukuzawa, K., Sasanuma, S., Tatsumi, I., Suzuki, T., & Fukusako, Y. (1998). Recovery process of colour naming defects in pure alexia - A five year longitudinal experimental study. Aphasiology, 12(3), 267-282.

Recovery process of colour naming defects in pure alexia - A five year longitudinal experimental study. / Fukuzawa, Kazuyoshi; Sasanuma, Sumiko; Tatsumi, Itaru; Suzuki, Tsutomu; Fukusako, Yoko.

In: Aphasiology, Vol. 12, No. 3, 03.1998, p. 267-282.

Research output: Contribution to journalArticle

Fukuzawa, K, Sasanuma, S, Tatsumi, I, Suzuki, T & Fukusako, Y 1998, 'Recovery process of colour naming defects in pure alexia - A five year longitudinal experimental study', Aphasiology, vol. 12, no. 3, pp. 267-282.
Fukuzawa, Kazuyoshi ; Sasanuma, Sumiko ; Tatsumi, Itaru ; Suzuki, Tsutomu ; Fukusako, Yoko. / Recovery process of colour naming defects in pure alexia - A five year longitudinal experimental study. In: Aphasiology. 1998 ; Vol. 12, No. 3. pp. 267-282.
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