Key result
The clinical measurement of acoustic reflex latency is affected by the frequency of the eliciting signal and the temporal characteristics of the measurement apparatus.
Highlights methodological issues in measuring acoustic reflex latency, specifically regarding signal frequency and apparatus temporal characteristics.
Clinicians should account for frequency and apparatus timing in acoustic reflex latency testing; this novel finding leaves open the need for standardized protocols.
Two problems in the clinical measurement of acoustic reflex latency are discussed. First, the rise characteristic of the reflex is affected by the frequency of the eliciting signal. Due to the closed ipsilateral feedback loop system the reflex rises more rapidly at low frequencies than at high frequencies. Second, the temporal characteristic of the measurement apparatus may influence the apparent morphology of the reflex at low frequencies.
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Jerger et al. (1986) conducted a review in Acoustic reflex latency measurement. Clinical measurement of acoustic reflex latency was evaluated. The clinical measurement of acoustic reflex latency is affected by the frequency of the eliciting signal and the temporal characteristics of the measurement apparatus.
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