Unilateral imagined movement increases interhemispheric inhibition from the contralateral to ipsilateral motor cortexSpringer Science and Business Media LLC - Tập 232 - Trang 1823-1832 - 2014
Nan Liang, Kozo Funase, Makoto Takahashi, Kanji Matsukawa, Tatsuya Kasai
Whether a cortical drive to one limb modulates interhemispheric inhibition (IHI) from the active targeting to the non-active motor cortex (M1) remained unclear. The present study using a conditioning-test transcranial magnetic stimulation (TMS) paradigm aimed to directly demonstrate the modulation of IHI during unilateral voluntary or imagined movement in humans. Subjects were asked to actually pe...... hiện toàn bộ
Characterising error-awareness of attentional lapses and inhibitory control failures in patients with traumatic brain injurySpringer Science and Business Media LLC - Tập 180 - Trang 59-67 - 2007
F. M. O’Keeffe, P. M. Dockree, P. Moloney, S. Carton, I. H. Robertson
Awareness deficits are a significant problem following traumatic brain injury (TBI). This study examined error processing as candidate marker of awareness and compared the performance of 18 TBI participants and 18 controls using an online error-monitoring task while participants performed simple go/no-go tasks. Error-monitoring performance was compared where the no-go target was part of (a) a pred...... hiện toàn bộ
Rapid and opposite effects of dexamethasone on in vivo and in vitro hypothalamic somatostatin releaseSpringer Science and Business Media LLC - Tập 113 - Trang 337-342 - 1997
Corinne Estupina, Jorge Belmar, Lucia Tapia-Arancibia, Hélene Astier, Sandor Arancibia
We have previously reported the rapid response of hypothalamic somatostatin (SS) neurons to acute stress. Since it is well known that glucocorticoids (GC) are involved in neuroendocrinal stress regulation, we investigate in this study the effects of acute administration of dexamethasone (Dex) on both in vivo and in vitro SS release. Freely moving animals received stereotaxic implant of a push-pull...... hiện toàn bộ
Neural mechanisms and models underlying joint actionSpringer Science and Business Media LLC - Tập 211 - Trang 643-653 - 2011
Fabian Chersi
Humans, in particular, and to a lesser extent also other species of animals, possess the impressive capability of smoothly coordinating their actions with those of others. The great amount of work done in recent years in neuroscience has provided new insights into the processes involved in joint action, intention understanding, and task sharing. In particular, the discovery of mirror neurons, whic...... hiện toàn bộ
Age-related differences in visual sampling requirements during adaptive locomotionSpringer Science and Business Media LLC - Tập 201 - Trang 467-478 - 2009
Graham John Chapman, Mark Andrew Hollands
This study investigates if there are age- and falls-risk related differences in the length of time individuals need following fixation of a stepping target in order to step accurately onto it. This aim was achieved by manipulating the timing and location of stepping target presentation and comparing the effects on stepping performance between young adults, older adults characterised as having a lo...... hiện toàn bộ
Interindividual variability and age-dependency of motor cortical plasticity induced by paired associative stimulationSpringer Science and Business Media LLC - Tập 187 - Trang 467-475 - 2008
J. Florian M. Müller-Dahlhaus, Yuriy Orekhov, Yali Liu, Ulf Ziemann
Paired associative stimulation (PAS) can increase motor cortical excitability, possibly by long-term potentiation (LTP)-like mechanisms. As the capability of the cortex for plasticity decreases with age, we were interested here in testing interindividual variability and age-dependency of the PAS effect. Motor-evoked potentials (MEPs) were recorded from the resting right abductor pollicis brevis mu...... hiện toàn bộ
Effects of walking in a force field for varying durations on aftereffects and on next day performanceSpringer Science and Business Media LLC - Tập 199 - Trang 145-155 - 2009
Karine Fortin, Andreanne Blanchette, Bradford J. McFadyen, Laurent J. Bouyer
This study investigated the effects of walking in an elastic force field (FF) for varying durations (49–1,629 strides) on: (a) the magnitude and duration of aftereffects, (b) performance in the FF on the next day. On day 1 in the FF, subjects (n = 17) showed an initial large error in peak toe velocity during swing (9–61% above baseline) that was largely reduced within the first 40 strides. After F...... hiện toàn bộ