Recording of neural activity during grasping actions in macaques showed that grasp-related sensorimotor transformations are accomplished in a circuit constituted by the anterior part of the intraparietal sulcus (AIP), the ventral (F5) and the dorsal (F2) region of the premotor area. In humans, neuroimaging studies have revealed the existence of a similar circuit, involving the putative homolog ...

Previous research has shown that the observation of actions and the execution of actions activate common neural systems. More recently, we have presented data showing that action observation of prehension primes subsequent execution (Castiello, Lusher, Mari, Edwards, & Humphreys, 2002). In the current paper we examined action priming under conditions in which the size of the prime did not predi...

Marc A. Pizzimenti, Warren G. Darling, Diane L. Rotella, David W. McNeal, James L. Herrick, Jizhi Ge, Kimberly S. Stilwell-Morecraft, and Robert J. Morecraft Department of Anatomy and Cell Biology, Carver College of Medicine, and Department of Integrative Physiology, Motor Performance Laboratories, The University of Iowa, Iowa City, Iowa; and Department of Basic Biomedical Sciences, Laboratory ...

Euplokamis has coiled tentilla on its tentacles, which can be discharged, flicking out at high velocity, when triggered by contact with prey. The tentillum adheres to prey by means of numerous colloblasts. Discharge, which takes 40-60 ms, is accomplished by contraction of striated muscles, found only in this genus among the Ctenophora. Restoration of the coiled state is attributable to passive,...

IT IS COMMON KNOWLEDGE that healthy aging is associated with deterioration of motor function across a range of tasks. Such changes have profound impact on everyday activities and overall quality of life. It is also well known that aging changes various levels of the sensorimotor system, from a reduction in the number of muscle fibers, -motoneurons, and neurons in the primary motor cortex (2, 3)...