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Case Reports in Neurological Medicine
Volume 2015 (2015), Article ID 396802, 6 pages
http://dx.doi.org/10.1155/2015/396802
Case Report

Heading Disorientation after Right Posteromedial Infarction

1Department of Neurology, International University of Health and Welfare Hospital, 537-3 Iguchi, Nasushiobara, Tochigi, Japan
2Department of Rehabilitation, International University of Health and Welfare Hospital, 537-3 Iguchi, Nasushiobara, Tochigi, Japan
3Department of Speech and Hearing Sciences, International University of Health and Welfare, 2600-1 Kitakanemaru, Ohtahara, Tochigi, Japan

Received 19 June 2015; Revised 15 August 2015; Accepted 7 September 2015

Academic Editor: Yolande Pijnenburg

Copyright © 2015 Ritsuo Hashimoto et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We report the case of heading disorientation following ischemic stroke involving the right posteromedial areas. The patient was administered a new test named the Card Placing Test during which a subject was required to recreate an array of three cards, each of which was randomly placed on eight grids around the subject, before and after the subject’s rotation. Qualitative analysis of his performance after rotation revealed that over half of the errors comprised transposition and rotational offset. His score on the Card Placing Test was compared with those of normal controls . The results showed that his score on Card Placing Test after rotation was significantly lower than those of controls, whereas there was no significant difference between the case and controls in profile of error types. We infer that the heading disorientation observed in the present case was a result of a derangement of a short-term buffer that integrated information on spatial locations of objects with changes in body directions.