Abstract
The whole brain activation during visually guided reaching and grasping behaviors was investigated in three macaque monkeys using positron emission tomography (PET) scanning with [(15)O]H(2)O. Activation was consistently observed in the parietal regions such as PO, MIP, VIP, LIP and AIP, frontal regions such as PMd, M1 and S1 on the contralateral hemisphere and in the ipsilateral intermediate and lateral deep cerebellar nuclei. Activation was also observed in the areas representing the central and peripheral visual field in the early visual cortices. Thus, the visuo-motor processing, including parieto-frontal stream, involved in the control of visually guided reaching and grasping behaviors could be visualized for the first time in macaque monkeys.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Animals
-
Arm / innervation
-
Arm / physiology
-
Brain Mapping
-
Cerebellar Nuclei / anatomy & histology
-
Cerebellar Nuclei / diagnostic imaging
-
Cerebellar Nuclei / physiology
-
Dominance, Cerebral / physiology
-
Female
-
Fingers / innervation
-
Fingers / physiology
-
Frontal Lobe / anatomy & histology
-
Frontal Lobe / diagnostic imaging
-
Frontal Lobe / physiology*
-
Hand Strength / physiology*
-
Macaca mulatta
-
Male
-
Oxygen Consumption / physiology
-
Oxygen Radioisotopes
-
Parietal Lobe / anatomy & histology
-
Parietal Lobe / diagnostic imaging
-
Parietal Lobe / physiology*
-
Positron-Emission Tomography
-
Psychomotor Performance / physiology*
-
Visual Pathways / anatomy & histology
-
Visual Pathways / diagnostic imaging
-
Visual Pathways / physiology*