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Damage to superior parietal cortex impairs pointing in the sagittal Plane
- Source :
- Experimental Brain Research. 195:193-193
- Publication Year :
- 2009
- Publisher :
- Springer Science and Business Media LLC, 2009.
-
Abstract
- Neurophysiology and neuroimaging research implicates distinct regions of posterior parietal cortex for reaching versus grasping and for completing these movements in central versus peripheral space. Typically, visuomotor tasks only examine movements made in the frontoparallel plane. We examined a patient with a right superior parietal lesion encompassing the parietal-occipital junction, the intraparietal sulcus and the putative human homologue of V6A on pointing tasks in the sagittal or frontoparallel planes. The patient did not demonstrate a speed-accuracy trade-off, but did show larger times post-peak velocity for all movement directions. Her movements in the sagittal axis were more disordered than movements in the frontoparallel plane. These data indicate a role for superior parietal cortex in fine tuning of visually guided movements and more particularly for movements made back towards the body.
- Subjects :
- Posterior parietal cortex
Intraparietal sulcus
Motor Activity
Functional Laterality
Neuroimaging
Parietal Lobe
medicine
Humans
Aged, 80 and over
Analysis of Variance
Superior parietal cortex
General Neuroscience
Parietal lobe
Anatomy
Neurophysiology
Hand
Magnetic Resonance Imaging
Sagittal plane
Biomechanical Phenomena
Stroke
medicine.anatomical_structure
Right superior
Female
Psychology
Neuroscience
Psychomotor Performance
Subjects
Details
- ISSN :
- 14321106 and 00144819
- Volume :
- 195
- Database :
- OpenAIRE
- Journal :
- Experimental Brain Research
- Accession number :
- edsair.doi.dedup.....427b127766ad1bd5bf845f8c898f1171