Response latency denotes the time delay between the stimulus onset and the beginning of the evoked response. It is believed to contain important information for the understanding of the temporal code. In the last twenty years, many methods dealing with latency estimation from experimental data were proposed (e.g. [1], [3]). As in practice the studied responses are mostly excitatory, these metho...

Disrupted triphasic electromyography (EMG) patterns of agonist and antagonist muscle pairs during fast goal-directed movements have been found in patients with hypermetria. Since peripheral electrical stimulation (ES) and motor training may modulate motor cortical excitability through plasticity mechanisms, we aimed to investigate whether temporal ES-assisted movement training could influence p...

The control of self-initiated falls from different heights was studied. The objective of the study was to investigate in a quantitative manner the modulation of EMG timing (i.e. onset from take-off and duration from onset to touch-down) and amplitude (before and after foot contact) as a function of fall height. The muscles studied were m. soleus and m. tibialis anterior. Kinematic (ankle joint ...

Aim: The heterogeneity of the Amyotrophic Lateral Sclerosis (ALS) clinical phenotypes leads to difficulties in early diagnosis. ‘split hand’ sign is defined as thenar muscles that are more prominently affected by hypothenar. In this study, results initial nerve conduction study patients were compared with those controls order increase findings supporting diagnosis.
 Material and Method: Se...

Electrical stimulation via skin electrodes placed over human tendons results in a reflex inhibition of voluntary activity in the stimulated muscle, probably due to activation of Golgi tendon organ afferents. The characteristics of this response in the extensor digitorum communis (EDC) muscles of subjects with Parkinson's disease were compared with those in age-matched controls. The threshold of...

A description is made of the patterns of electrical activity in the proximal muscles of the cricket foreleg during restrained locomotion and seeking movements, while the animal is held by the mesonotum, allowing the legs complete freedom of movement. 1. The initiation of the swing phase corresponds to the onset of the abductor muscle activity (Fig. 1). Its duration is matched by that of abducti...

PURPOSE To investigate the co-contraction of ankle muscles in older subjects with and without a history of falls during a stepping down activity, and whether the co-contraction was disrupted by a concurrent cognitive task. METHOD Ten fallers and 9 non-fallers (mean age = 72.0 +/- 5.0 and 72.1 +/- 7.3 years, respectively) were recruited. Electromyography (EMG) of the tibialis anterior (TA) and...