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Region specific regulation of glutamic acid decarboxylase mRNA expression by dopamine neurons in rat brain
Springer Science and Business Media LLC - Tập 77 - Trang 611-620 - 1989
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
In memory of Francesca Frassinetti (1967–2023)
Springer Science and Business Media LLC - Tập 241 - Trang 939-941 - 2023
Perceptual decoupling or trigger happiness: the effect of response delays and shorter presentation times on a go-no-go task with a high go prevalence
Springer Science and Business Media LLC - - 2024
In the current investigation, we modified the high Go, low No-Go Sustained Attention to Response Task (SART). Some researchers argue a commission error, an inappropriate response to a No-Go stimulus, in the SART is due to the participant being inattentive, or perceptually decoupled, during stimulus onset. Response delays in the SART reduce commission errors. A response delay may therefore enable a...... hiện toàn bộ
Intercepting moving targets: does memory from practice in a specific condition of target displacement affect movement timing?
Springer Science and Business Media LLC - Tập 211 - Trang 109-117 - 2011
This investigation aimed at assessing the extent to which memory from practice in a specific condition of target displacement modulates temporal errors and movement timing of interceptive movements. We compared two groups practicing with certainty of future target velocity either in unchanged target velocity or in target velocity decrease. Following practice, both experimental groups were probed i...... hiện toàn bộ
Characterization of corticospinal activation of finger motor neurons during precision and power grip in humans
Springer Science and Business Media LLC - Tập 236 - Trang 745-753 - 2018
Direct and indirect corticospinal pathways to finger muscles may play a different role in control of the upper extremity. We used transcranial magnetic stimulation (TMS) and coherence analysis to characterize the corticospinal drive to the first dorsal interosseous (FDI) and abductor pollicis brevis (APB) when active during a precision and power grip task. In experiment 1, single motor units were ...... hiện toàn bộ
Saccadic selection and crowding in visual search: stronger lateral masking leads to shorter search times
Springer Science and Business Media LLC - Tập 211 Số 1 - Trang 119-131 - 2011
Occurrence of human express saccades depends on stimulus uncertainty and stimulus sequence
Springer Science and Business Media LLC - Tập 89 - Trang 678-681 - 1992
Saccadic latencies measured in response to a step-wise displacement of the target may be substantially reduced if a gap separates the offset of the initial fixation point and the onset of the peripheral target. According to Fischer and Ramsperger (1984) this paradigm provokes a bimodal latency distribution which consists of a peak of very fast saccadic responses (express saccades) at about 110 ms ...... hiện toàn bộ
Mental images across the adult lifespan: a behavioural and fMRI investigation of motor execution and motor imagery
Springer Science and Business Media LLC - Tập 224 - Trang 519-540 - 2012
Motor imagery (M.I.) is a mental state in which real movements are evoked without overt actions. There is some behavioural evidence that M.I. declines with ageing. The neurofunctional correlates of these changes have been investigated only in two studies, but none of the these studies has measured explicit correlations between behavioural variables and the brain response, nor the correlation of M....... hiện toàn bộ
Effects of arm weight support on neuromuscular activation during reaching in chronic stroke patients
Springer Science and Business Media LLC - Tập 237 - Trang 3391-3408 - 2019
To better understand how arm weight support (WS) can be used to alleviate upper limb impairment after stroke, we investigated the effects of WS on muscle activity, muscle synergy expression, and corticomotor excitability (CME) in 13 chronic stroke patients and 6 age-similar healthy controls. For patients, lesion location and corticospinal tract integrity were assessed using magnetic resonance imag...... hiện toàn bộ
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