Journal of Physiology
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Excitation by geniculocortical synapses is not ‘vetoed’ at the level of dendritic spines in cat visual cortex.1. We used anatomical methods to examine whether the geniculocortical afferent input to dendritic spines could be gated or ‘vetoed’ by an inhibitory input to the same spine. 2. Physiologically identified X‐ and Y‐type afferents were injected intra‐axonally with horseradish peroxidase (HRP), processed, and drawn under the light microscope. Selected regions of the terminal arbors were then s... ... hiện toàn bộ
Journal of Physiology - Tập 440 Số 1 - Trang 723-734 - 1991
Cannabinoid actions on rat superficial medullary dorsal horn neurons in vitro
Journal of Physiology - Tập 534 Số 3 - Trang 805-812 - 2001
A murine experimental model for the mechanical behaviour of viable right‐ventricular myocardium
Journal of Physiology - Tập 590 Số 18 - Trang 4571-4584 - 2012
Morphological and physiological studies of development of the monosynaptic reflex pathway in the rat lumbar spinal cord.1. The developmental process of the monosynaptic reflex pathway was investigated morphologically and electrophysiologically in isolated lumbar spinal cords of new‐born and fetal rats. 2. Dorsal root fibres were stained with horseradish peroxidase in the fourth lumbar (L4) segment at different ages ranging from embryonic day (E) 15.5 to post‐natal day (P) 0. At E15.5, several collaterals is... ... hiện toàn bộ
Journal of Physiology - Tập 389 Số 1 - Trang 441-459 - 1987
Cortico‐muscular synchronization during isometric muscle contraction in humans as revealed by magnetoencephalography
Journal of Physiology - Tập 527 Số 3 - Trang 623-631 - 2000
Control of motor units in human flexor digitorum profundus under different proprioceptive conditions
Changing the posture of the human fingers can functionally ‘disengage’ the deep finger flexor muscle from its normal action on the terminal phalanx of the fourth (or third) finger. This enables the activity of the muscle to be studied both with and without its normal proprioceptive inputs. ... hiện toàn bộ
Journal of Physiology - Tập 502 Số 3 - Trang 693-701 - 1997
The maturation of neuromuscular function in a multiply innervated structure: development of the longitudinal smooth muscle of the foetal mammalian gut and its cholinergic excitatory, adrenergic inhibitory, and non‐adrenergic inhibitory innervation1. The earliest components of the developing innervation of the rabbit intestine to be detected in this study were the cholinergic excitatory and the intrinsic inhibitory innervation. These developed simultaneously in the rabbit at 17 days of gestation. Both were also present in the mouse by the 16th day of gestation. Responsiveness of rabbit tissue to exogenous acetylcholine appeared toge... ... hiện toàn bộ
Journal of Physiology - Tập 234 Số 2 - Trang 257-277 - 1973
Ballistic flexion movements of the human thumb.1. In response to an auditory stimulus normal subjects made ballistic flexion movements of the top joint of the thumb against a lever attached to the spindle of a low‐inertia electric motor. 2. Electromyographic (e.m.g.) activity was recorded from pairs of fine wire electrodes inserted into flexor pollicis longus and extensor pollicis longus, respectively the sole flexor and extensor of th... ... hiện toàn bộ
Journal of Physiology - Tập 294 Số 1 - Trang 33-50 - 1979
Amplitude‐ and instruction‐dependent modulation of movement‐related electromyogram activity in humans.1. Studies were made of the electromyogram (EMG) patterns associated with the performance of visually guided, step‐tracking arm movements by normal humans. Subjects were instructed to make movement either ‘accurately', ‘as fast as possible’ or ‘fast and accurately'. Movements of 16, 32, 48 and 64 deg of arc were made with each instruction. Movements had durations of approximately 250‐600 m... ... hiện toàn bộ
Journal of Physiology - Tập 316 Số 1 - Trang 97-107 - 1981
The function of the antagonist muscle during fast limb movements in man.We have examined fast flexion movements of the human thumb and fast extension movements of the elbow over three different distances at a variety of speeds in order to elucidate the function of the antagonist muscle in these circumstances. All movements were of such a velocity that they showed the typical bi‐ or triphasic pattern of muscle activation in agonist and antagonist. Slower moveme... ... hiện toàn bộ
Journal of Physiology - Tập 335 Số 1 - Trang 1-13 - 1983
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