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Related Concept Videos

Reflex Activity01:08

Reflex Activity

A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...

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Related Experiment Video

Updated: May 9, 2026

Objective Nociceptive Assessment in Ventilated ICU Patients: A Feasibility Study Using Pupillometry and the Nociceptive Flexion Reflex
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Objective Nociceptive Assessment in Ventilated ICU Patients: A Feasibility Study Using Pupillometry and the Nociceptive Flexion Reflex

Published on: July 4, 2018

Acoustic reflex measurement.

Kim S Schairer1, M Patrick Feeney, Chris A Sanford

  • 1Audiology and Speech-Language Pathology Service, James H. Quillen Veteran Affairs Medical Center, Mountain Home, Tennessee 37684, USA. kim.schairer@va.gov

Ear and Hearing
|August 1, 2013
PubMed
Summary
This summary is machine-generated.

Wideband acoustic immittance (WAI) offers a more comprehensive middle ear muscle reflex (MEMR) assessment than traditional methods. This advanced technique provides lower detection thresholds and automated analysis for broader clinical applications.

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Area of Science:

  • Audiology
  • Otoacoustic Emissions
  • Acoustic Immittance

Background:

  • Middle ear muscle reflex (MEMR) measurements are crucial for audiological assessments.
  • Current clinical immittance tests use single frequencies, limiting MEMR analysis.
  • Distinguishing cochlear from retrocochlear pathologies relies on MEMR cross-checks.

Purpose of the Study:

  • To evaluate the benefits of wideband acoustic immittance (WAI) for MEMR measurement.
  • To compare WAI-based MEMR with traditional single-frequency methods.
  • To explore WAI's potential for improved audiological diagnostics and screening.

Main Methods:

  • Utilized wideband acoustic immittance (WAI) to measure multiple acoustic parameters (admittance, reflectance, absorbance).
  • Analyzed MEMR across a wide frequency range (250–8000 Hz).
  • Compared WAI-derived MEMR with standard single-frequency immittance tests.

Main Results:

  • WAI allows for MEMR identification irrespective of maximal immittance shift frequency.
  • WAI yields lower MEMR thresholds compared to conventional methods.
  • WAI enables automated, objective MEMR identification for screening.

Conclusions:

  • WAI provides a more efficient and sensitive method for MEMR assessment.
  • The technology enhances diagnostic capabilities for various age groups and pathologies.
  • WAI has significant potential for expanding audiological screening programs, including for newborns.