Region specific regulation of glutamic acid decarboxylase mRNA expression by dopamine neurons in rat brainSpringer Science and Business Media LLC - Tập 77 - Trang 611-620 - 1989
N. Lindefors, S. Brene, M. Herrera-Marschitz, H. Persson
In situ hybridization histochemistry and RNA blots were used to study the expression of glutamic acid decarboxylase (GAD) mRNA in rats with or without a unilateral lesion of midbrain dopamine neurons. Two populations of GAD mRNA positive neurons were found in the intact caudate-putamen, substantia nigra and fronto-parietal cortex. In caudate-putamen, only one out of ten of the GAD mRNA positive ne...... hiện toàn bộ
The influence of goals on movement kinematics during imitationSpringer Science and Business Media LLC - Tập 204 - Trang 353-360 - 2009
Kelly S. Wild, Ellen Poliakoff, Emma Gowen, Andrew Jerrison
This study took a quantitative approach to investigate movement kinematics during the imitation of goal-directed and non-goal directed movements. Motion tracking equipment was used to record the hand movements of 15 healthy participants during an imitation task involving aiming movements that varied in speed. We predicted that movement kinematics would be most similar to the observed movements in ...... hiện toàn bộ
Task goal and grip force dynamicsSpringer Science and Business Media LLC - Tập 156 - Trang 451-457 - 2004
Kimberlee Jordan, Karl M. Newell
This study examined the effect of task goal on the structure of isometric force variability during precision grasping. In general, variability of isometric force production decreases when participants are asked to maintain a particular force output and are provided with visual feedback, although the irregularity of force output tends to increase under these conditions. In the current study we comp...... hiện toàn bộ
Differential effects of stimulation of the cat's red nucleus on lumbar alpha motoneurones and their Renshaw cellsSpringer Science and Business Media LLC - Tập 62 - Trang 161-174 - 1986
H. -D. Henatsch, J. Meyer-Lohmann, U. Windhorst, J. Schmidt
1. The red nucleus region was stereotaxically stimulated with short trains of high-frequency alternating current pulses in anaesthetized cats. The effects were studied, in contralateral lumbar segments, on the responses of microrecorded individual Renshaw cells (RCs) to antidromic or orthodromic test shocks of ventral root or muscle nerve fibres. Monosynaptic reflexes (MRs) of their motoneurone po...... hiện toàn bộ
Evidence for the presence of PS-OFF neurons in the ventromedial medulla oblongata of freely moving catsSpringer Science and Business Media LLC - Tập 49 - Trang 311-314 - 1983
K. Sakai, G. Vanni-Mercier, M. Jouvet
Recordings were made from 24 “PS-OFF” neurons, characterized by a slow rhythmic discharge rate during waking and slow wave sleep and a marked decrease in the firing rate during paradoxical sleep, in the ventromedial medulla oblongata of freely moving cats. These neurons were located in either the nuclei raphe magnus and pallidus or the neighboring reticular formation where serotonincontaining neur...... hiện toàn bộ