Acoustic reflex threshold.
We registered the R3 (reflex) threshold and the subjective pain threshold.
CHC, combined hormonal contraceptives; RT-SS, nociceptive withdrawal reflex threshold elicited with a single stimulus; RT-TS, nociceptive withdrawal reflex threshold elicited with temporal summation; VAS, visual analogue scale.
The single stimulus reflex threshold (RT-SS) was the lowest intensity (mA) needed to elicit a stable muscular response.
Stimulus intensity was adjusted to 2.5 times the reflex threshold on the unaffected side (15 45 mA) and kept equal on both sides.
Compared to healthy subjects, the RIII reflex threshold and TST were lower and the R2 area higher during, but not outside of a bout.
A significantly lower reflex threshold, higher amplitude and lower TST was found in MOH patients before detoxification in comparison with episodic migraine and controls [120].
The acoustic reflex threshold (ART) is the lowest level of a sound stimulus that can elicit an ASR response, i.e., a measurable change in acoustic emittance.
The reflex threshold following a single stimulus (RT-SS) was considered as the lowest current intensity needed to elicit a stable electromyografic response (mA) (see ref. [8]).
