Prehension movements and perceived object depth structure
نویسندگان
چکیده
منابع مشابه
Prehension movements in the macaque monkey: effects of object size and location.
Prehension movements were examined in freely behaving monkeys and compared with the well-known characteristics of human movements. The degree of independence of the components of movements (i.e., reaching and grasping) was investigated in animals trained to reach for and grasp three-dimensional objects. To this aim, the kinematics of prehension movements was recorded using an Optotrak system in...
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This experiment was carried out to test the hypothesis that three-dimensional upper limb movements could be initiated and controlled in the joint space via a mechanism comparing an estimate of the current postural state of the upper arm with a target value determined by one specific inverse static transform converting the coordinates of the object into a set of arm, forearm, and wrist angles. T...
متن کاملAttentional Selection during Preparation of Prehension Movements
In two experiments coupling between dorsal attentional selection for action and ventral attentional selection for perception during preparation of prehension movements was examined. In a dual-task paradigm subjects had to grasp an X-shaped object with either the left or the right hand's thumb and index finger. Simultaneously a discrimination task was used to measure visual attention prior to th...
متن کاملPerceptuo-motor interactions during prehension movements.
Adaptive behavior relies on the integration of perceptual and motor processes. In this study, we aimed at characterizing the cerebral processes underlying perceptuo-motor interactions evoked during prehension movements in healthy humans, as measured by means of functional magnetic resonance imaging. We manipulated the viewing conditions (binocular or monocular) during planning of a prehension m...
متن کاملHow humans control their prehension movements?
Prehension is traditionally described as consisting of two components that are based on different visual information. The transport component is directed by the extrinsic properties of visual information; while the grasp component is guided by the intrinsic properties of visual information. The visual information transports in the dorsomedial visual stream through the parieto-occipital cortex t...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 1998
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03206053