The perception of auditory motion in sighted and early blind individuals.
auditory motion
blindness
cross-modal plasticity
spatiotemporal selectivity
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
05 Dec 2023
05 Dec 2023
Historique:
pmc-release:
28
05
2024
medline:
30
11
2023
pubmed:
28
11
2023
entrez:
28
11
2023
Statut:
ppublish
Résumé
Motion perception is a fundamental sensory task that plays a critical evolutionary role. In vision, motion processing is classically described using a motion energy model with spatiotemporally nonseparable filters suited for capturing the smooth continuous changes in spatial position over time afforded by moving objects. However, it is still not clear whether the filters underlying auditory motion discrimination are also continuous motion detectors or infer motion from comparing discrete sound locations over time (spatiotemporally separable). We used a psychophysical reverse correlation paradigm, where participants discriminated the direction of a motion signal in the presence of spatiotemporal noise, to determine whether the filters underlying auditory motion discrimination were spatiotemporally separable or nonseparable. We then examined whether these auditory motion filters were altered as a result of early blindness. We found that both sighted and early blind individuals have separable filters. However, early blind individuals show increased sensitivity to auditory motion, with reduced susceptibility to noise and filters that were more accurate in detecting motion onsets/offsets. Model simulations suggest that this reliance on separable filters is optimal given the limited spatial resolution of auditory input.
Identifiants
pubmed: 38015842
doi: 10.1073/pnas.2310156120
pmc: PMC10710053
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2310156120Subventions
Organisme : NEI NIH HHS
ID : K99 EY023268
Pays : United States
Organisme : NEI NIH HHS
ID : K99 EY034546
Pays : United States
Organisme : NEI NIH HHS
ID : R01 EY014645
Pays : United States
Déclaration de conflit d'intérêts
Competing interests statement:The authors declare no competing interest.
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