Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
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Comparative Study
Sensitization and habituation of AMH and C-fiber related percepts of repetitive radiant heat stimulation.
Pain perception involves neuronal plasticity at peripheral and central stages, resulting in sensitization or habituation, depending on intensity and temporal features of stimulation. Concurrent assessment of perceptual change over different time spans is therefore important for understanding the dynamics of pain processing. ⋯ The method is suitable for quantitative sensory testing of dynamic pain processing over different time spans, relevant in clinical testing of pain and in drug assessment.
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Comparative Study Clinical Trial
Gait recovery is not associated with changes in the temporal patterning of muscle activity during treadmill walking in patients with post-stroke hemiparesis.
To establish whether functional recovery of gait in patients with post-stroke hemiparesis coincides with changes in the temporal patterning of lower extremity muscle activity and coactivity during treadmill walking. ⋯ Recovery of walking ability in post-stroke hemiparesis is not necessarily associated with, or dependent on, reorganization in the temporal control of gait related muscle activity. Normalization of the temporal coordination of muscle activity during gait may not be an important clinical goal during post-acute rehabilitation.
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Comparative Study
Effects of food-related stimuli on visual spatial attention in fasting and nonfasting normal subjects: Behavior and electrophysiology.
Attention biases toward food-related stimuli were examined as mediators of normal, healthy motivated behavior. ⋯ Even when the motivational salience of spatial cues is irrelevant to task demands, it can have an observable effect on attention. This design allows for the behavioral and electrophysiological study of motivation-attention interactions through loading of spatial cues with motivation-related semantic properties.
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Comparative Study
TMS motor cortical brain mapping in patients with complex regional pain syndrome type I.
The motor cortical representation in patients with complex regional pain syndrome type I (CRPS I) was determined under the assumption that the motor cortex undergoes representational adaptations in the course of CRPS. ⋯ This could be of importance in rehabilitative strategies for the sensory motor system in CRPS I patients.
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We aimed to perform a quantitative analysis of event-related modulation of EEG activity, resulting from a not-warned and a warned paradigm of painful laser stimulation, in migraine patients and controls, by the use of a novel analysis, based upon a parametric approach to measure predictability of short and noisy time series. ⋯ The LOO method enabled to show in migraine subtle changes in the cortical response to pain.