Erika G. Spaich

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The objective of this study was to investigate the modulation of the nociceptive withdrawal reflex during gait measured using Force Sensitive Resistors (FSR). Electrical stimulation was delivered to four locations on the sole of the foot at three different time points between heel-off and toe-off. Peak force changes were measured by FSRs attached to the big(More)
The aim of this study was to investigate the modulation and topography of the nociceptive withdrawal reflex elicited by painful electrical stimulation of the foot sole during gait. Fifteen healthy volunteers participated in this study. Cutaneous electrical stimulation was delivered on five locations of the foot sole after heel-contact, during foot-flat,(More)
OBJECTIVE In spinal cord injured (SCI) subjects, exaggerated withdrawal reflexes associated with a dominant flexor pattern irrespective of stimulation site have been reported. In the present study, withdrawal reflex receptive field (RRF) was determined in complete SCI subjects (N=9). METHODS Distributed electrical stimulation was applied to the sole of(More)
Dynamic changes in the topography of the human withdrawal reflex receptive fields (RRF) were assessed by repetitive painful stimuli in 15 healthy subjects. A train of five electrical stimuli was delivered at a frequency of 3 Hz (total train duration 1.33 s). The train was delivered in random order to 10 electrode sites on the sole of the foot. Reflexes were(More)
Characterization of gait pattern is of interest for clinical gait assessment. Past developments of ambulatory measurement systems have still limitations for daily usage in the clinical environment. This study investigated the potential of 3D angular accelerations of foot, shank, and thigh to characterize gait events and phases of ten healthy and ten(More)
Gait rehabilitation by Functional Electrical Stimulations (FESs) requires a reliable trigger signal to start the stimulations. This could be obtained by a simple switch under the heel or by means of an inertial sensor system. This study provides an algorithm to detect gait events in differential acceleration signals of the foot. The key feature of(More)
OBJECTIVE To investigate the effects of bodyweight unloading on the excitability of the nociceptive withdrawal reflex (NWR) and of its receptive fields organisation during quiet stance in humans. METHODS The NWR was elicited in 14 volunteers by electrical stimulation of the sole of the foot at mid-forefoot, arch, and heel points. Participants stood(More)
  • Andrew James Stevenson, Natalie Thomas ; Mrachacz-Kersting, Edwin Van Asseldonk, Duncan L Turner, Erika Spaich, Geraldina +11 others
  • 2016
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OBJECTIVE To explore whether the trigeminocervical reflexes (TCRs) show a reflex receptive field organization in the brainstem. METHODS The facial skin of 16 healthy subjects was electrically stimulated at nine sites reflecting the distribution of the three branches of the trigeminal nerve. The reflex-evoked EMG responses were measured bilaterally from(More)