The ARLT, or Acoustic Reflect Latency Test, is a simple clinical procedure that can be a sensitive indicator in distinguishing cochlear from retro cochlear lesions. The acoustic reflex latency is the time interval between the onset of an acoustic stimulus and the onset of a stapedius muscle contraction. What we’re measuring is the efficiency of the neural auditory system. And we know anything that affects the efficiency of the neural pathways will affect the latency measurement. Research has indicated that prolonged latency with retro cochlear disorders will be indicated with the ARLT. Although there are not norms, comparing the interaural latencies can provide valuable information to support the differential diagnosis. The ARLT can help provide information on the most appropriate next step in diagnosis and treatment and provide more diagnostic information with a less invasive or less uncomfortable evaluation.
Laura Prigge, AuD is an Application Specialist with GSI. Laura received her Doctorate of Audiology degree from AT Still University, a Master's of Arts in Audiology from UCONN and a Bachelor's of Science degree in Communication Disorders from Western Illinois University. Laura’s 20+ years of experience includes providing manufacturing support for a leading hearing aid manufacturer as well as technical audiology training and support for an international audiologic equipment company. Prior to that, she managed education and training at another hearing aid manufacturer and conducted audiologic evaluations on children, adults, and geriatric patients at a retail hearing center.
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