The Hoffmann reflex (H-reflex) is an electrically induced reflex that bypasses the muscle spindle. H-reflex is a useful measure to assess modulation of monosynaptic reflex activity in the spinal cord.
H-reflex studies can be set up multiple ways and users should determine the best approach for their required protocol; BIOPAC cannot recommend a “standard” approach for H-reflex.
Keywords: H-reflex, Hoffmann reflex, motor neuron, neuromuscular system, injury, muscle, anterior cruciate ligament, knee laxity, Neuronal pathways, Presynaptic–postsynaptic inhibition, Spinal circuits, arthrogenic muscle inhibition, disinhibitory modality, chronic ankle instability, cryotherapy
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H-reflex studies can be set up multiple ways and users should determine the best approach for their required protocol; BIOPAC can not recommend a “standard” approach for H-reflex.
The following H-reflex articles are just a sampling of available citations:
BIOPAC Research Solutions | EMG
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MP160 System
Wired | H-Reflex Methodology
MP160 with AcqKnowledge plus EMG amp, reusable 8 mm electrodes, gel, and impedance checker
MP160 System
Mobita
Wireless | H-Reflex Methodology
Mobita system for up to 32-CH Wireless Biopotentials plus AcqKnowledge
BioNomadix Logger
Wireless | H-Reflex Methodology
BioNomadix Logger and one transmitter for wireless dynamometry & EMG, clench force transducer, 30 cm leads & disposable electrodes, plus Impedance Checker
MP160 System
Wireless | H-Reflex Methodology
MP160 with AcqKnowledge plus BioNomadix wireless EMG & disposable cloth electrodes
Mobita
BioNomadix Logger
MP160 System
The STMTHERM is a thermal stimulator that can deliver both hot and cold temperature stimulation to a subject. The STMTHERM can be used to identify participant thermoreceptor response thresholds for a variety of applications. The STMTHERM consists of two parts, the Stimulator Control Unit (SCU) and the included Thermal Stimulation Transducer (TSD191 Thermode) to deliver temperature […]
View AllRecent studies in Psychophysiology, EMG, ECG and PPG measurement utilizing BIOPAC software and hardware: Fight or Flight (Reflex Response Time) “Fight or flight” is a physiological response that occurs due to a perceived threat to survival. It can physiologically be observed through an increase in heart rate, respiratory rate, blood pressure, oxygen availability, and other mechanisms. In […]
HRV, EMG, and EEG studies using BIOPAC hardware and software include: DON’T STRESS Humans encounter various stressful situations everyday at work, home, and school. Such stress when experienced at high degrees and/or for a long duration of time could lead to cardiovascular diseases, cognitive dysfunctions, and psychological disorders. This study examined the validity of a novel physiological measurement […]
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