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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Sensory Attenuation in the Auditory Modality as a Window Into Predictive Processing.

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|November 22, 2021
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Summary
This summary is machine-generated.

Our own sounds are perceived as quieter due to Sensory Attenuation (SA). This review examines SA

Keywords:
identity predictionpredictive processingsense of agency (SoA)sensory attenuationtemporal controltemporal prediction

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Area of Science:

  • Neuroscience
  • Auditory Perception
  • Cognitive Science

Background:

  • Self-generated sounds are perceived as less intense than externally generated sounds, a phenomenon known as Sensory Attenuation (SA).
  • Motor-based forward models have traditionally explained SA, but recent research challenges these explanations.
  • Understanding SA is crucial for comprehending human behavior and sensory processing.

Purpose of the Study:

  • To review the current understanding of Sensory Attenuation (SA).
  • To discuss the theoretical implications of SA for human behavior.
  • To analyze existing SA research paradigms and their limitations.

Main Methods:

  • Review of behavioral and electrophysiological studies in the auditory domain.
  • Analysis of theoretical models, including motor-based forward models and the Predictive Coding Framework.
  • Examination of existing paradigms for studying SA and their limitations.

Main Results:

  • SA is a well-documented phenomenon with significant implications for sensory processing.
  • Existing models, particularly motor-based forward models, face challenges from recent findings.
  • Isolating SA from other predictive mechanisms remains a key challenge in current research.

Conclusions:

  • Recent research necessitates a re-evaluation of traditional explanations for SA.
  • The Predictive Coding Framework offers a promising avenue for explaining heterogeneous empirical findings in SA research.
  • Further research is needed to fully elucidate the mechanisms and implications of SA.