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Selective, Non-lateralized Impairment of Motor Imagery Following Right Parietal Damage
- Source :
- Neurocase. 8:194-204
- Publication Year :
- 2002
- Publisher :
- Informa UK Limited, 2002.
-
Abstract
- Using variants of a visually guided pointing task, in which subjects make pointing movements towards targets of varying sizes, we explored motor imagery in a patient with visual neglect. When this patient actually pointed towards targets of different sizes he showed the normal correlation between movement duration (MD) and target size, such that MD increased as target size decreased. In contrast, his imagined movements did not show the same speed-accuracy trade-off observed for actual movements. This was true regardless of the hand used or the initial direction of movement (left versus right). The patient performed normally on several tasks of visual imagery, including size estimation, perceptual discrimination and localization of cities on an imagined map. This patient's performance suggests that the networks in the right parietal lobe play an important role in the generation of internal models of motor movements regardless of the hand used to perform the task.
- Subjects :
- Male
medicine.medical_specialty
Movement
media_common.quotation_subject
Audiology
Functional Laterality
Feedback
Developmental psychology
Task (project management)
Motor imagery
Arts and Humanities (miscellaneous)
Right parietal lobe
Parietal Lobe
medicine
Humans
Contrast (vision)
Aged
media_common
Movement (music)
Visually guided
Hand
Stroke
Perceptual discrimination
Imagination
Neurology (clinical)
Cognition Disorders
Psychology
Psychomotor Performance
Mental image
Subjects
Details
- ISSN :
- 14653656 and 13554794
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Neurocase
- Accession number :
- edsair.doi.dedup.....ba4491e112872ce290f84db2b29773ef