NDLI: A new perceptual illusion reveals mechanisms of sensory decoding

Content Provider	PubMed Central
Author	Jazayeri, Mehrdad Movshon, J. Anthony
Abstract	Perceptual illusions are usually thought to arise from the way sensory signals are encoded by the brain, and indeed are often used to infer the mechanisms of sensory encoding1. But perceptual illusions might also result from the way brain decodes sensory information2, reflecting the strategies that optimize performance in particular tasks. In a fine discrimination task, the most accurate information comes from neurons tuned away from the discrimination boundary3,4, and observers seem to use signals from these “displaced” neurons to optimize their performance5,6,7. We wondered whether using signals from these neurons might also bias perception. In a fine direction discrimination task using moving random-dot stimuli, we found that observers’ perception of the direction of motion is indeed biased away from the boundary. This misperception can be accurately described by a decoding model that preferentially weights signals from neurons whose responses best discriminate those directions. In a coarse discrimination task to which a different decoding rule applies4, the same stimulus is not misperceived, suggesting that the illusion is a direct consequence of the decoding strategy that observers use to make fine perceptual judgments. The subjective experience of motion is therefore not mediated directly by the responses of sensory neurons, but is only developed after the responses of these neurons are decoded.
Related Links	http://dx.doi.org/10.1038/nature05739
Ending Page	915
Page Count	4
Starting Page	912
File Format	PDF
ISSN	00280836
e-ISSN	14764687
Journal	Nature
Issue Number	7138
Volume Number	446
Language	English
Publisher Date	2007-04-19
Access Restriction	Open
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A Motion Illusion Reveals Mechanisms of Perceptual Stabilization

Perceptual organization in the tilt illusion

Decoding Reveals Plasticity in V3A as a Result of Motion Perceptual Learning

Dopamine neurons code subjective sensory experience and uncertainty of perceptual decisions

Dynamic sensory sensitivity and children's word decoding skills

A Perceptual Illusion of Empty Space Can Create a Perceptual Illusion of Levitation

Evolutionary conservation and neuronal mechanisms of auditory perceptual restoration

Probing the Neural Basis of Perceptual Phenomenology with the Touch-Induced Visual Illusion

Decoding simulated neurodynamics predicts the perceptual consequences of age-related macular degeneration

A new perceptual illusion reveals mechanisms of sensory decoding

Similar Documents

A Motion Illusion Reveals Mechanisms of Perceptual Stabilization

Perceptual organization in the tilt illusion

Decoding Reveals Plasticity in V3A as a Result of Motion Perceptual Learning

Dopamine neurons code subjective sensory experience and uncertainty of perceptual decisions

Dynamic sensory sensitivity and children's word decoding skills

A Perceptual Illusion of Empty Space Can Create a Perceptual Illusion of Levitation

Evolutionary conservation and neuronal mechanisms of auditory perceptual restoration

Probing the Neural Basis of Perceptual Phenomenology with the Touch-Induced Visual Illusion

Decoding simulated neurodynamics predicts the perceptual consequences of age-related macular degeneration

A new perceptual illusion reveals mechanisms of sensory decoding