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Auditory Perception: Laurel and Yanny Together at Last.
D Pressnitzer1, J Graves1, C Chambers1
1Laboratoire des Systèmes Perceptifs, Département d'études cognitives, ENS, PSL University, CNRS, Paris, France.
Current Biology : CB
|July 11, 2018
Summary
The Laurel/Yanny auditory illusion shows how our brains interpret ambiguous sounds, leading to different perceptions from the same audio input. This highlights that perception is an active inference process, even when we don't notice the ambiguity.
Area of Science:
- Auditory Perception
- Cognitive Science
- Neuroscience
Background:
- Recent widespread attention on the 'Laurel' or 'Yanny' auditory illusion.
- Demonstrates how identical auditory stimuli can yield divergent perceptual outcomes.
- Highlights the subjective nature of sensory information processing.
Purpose of the Study:
- To investigate the cognitive mechanisms underlying the 'Laurel'/'Yanny' auditory illusion.
- To explore how inherent ambiguity in sensory data is resolved.
- To understand the inferential nature of human perception.
Main Methods:
- Analysis of the ambiguous auditory speech utterance.
- Review of user-reported perceptual experiences.
- Theoretical framework integrating signal processing and cognitive inference.
Main Results:
- Confirmation of dichotomous perception ('Laurel' vs. 'Yanny') for the identical audio stimulus.
- Evidence that perception is an active inferential process, not passive reception.
- Demonstration that sensory ambiguity, though often unnoticed, significantly shapes perception.
Conclusions:
- The 'Laurel'/'Yanny' phenomenon exemplifies how the brain constructs reality from ambiguous sensory input.
- Perceptual outcomes are a result of cognitive inferences, influenced by individual factors.
- Understanding these inferential processes is key to understanding perception.
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