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SUMMARY:Sensory Perception Is a Holistic Inference Process - Paul Bays
DTSTART:20240306T140000Z
DTEND:20240306T150000Z
UID:TALK212989@talks.cam.ac.uk
CONTACT:Adam Triabhall
DESCRIPTION:This week we will discuss and debate a recent paper by Mao and
  Stocker\, published in Psychological Review (2024).\n\nAbstract: “Senso
 ry perception is widely considered an inference process that reflects the 
 best guess of a stimulus feature based on uncertain sensory information. H
 ere we challenge this reductionist view and propose that perception is rat
 her a holistic inference process that operates not only at the feature but
  jointly across all levels of the representational hierarchy. We test this
  hypothesis in the context of a commonly used psychophysical matching task
  in which subjects are asked to report their perceived orientation of a te
 st stimulus by adjusting a probe stimulus (method-of-adjustment). We intro
 duce a holistic matching model that assumes that subjects’ reports refle
 ct an optimal match between the test and probe stimulus\, both in terms of
  their inferred feature (orientation) and also their higher level represen
 tation (orientation category).Validation against several existing data set
 s demonstrates that the model accurately and comprehensively predicts subj
 ects’ response behavior and outperforms previous models both qualitative
 ly and quantitatively. Moreover\, the model generalizes to other feature d
 omains and offers an alternative account for categorical color perception.
  Our results suggest that categorical effects in sensory perception are ub
 iquitous and can be parsimoniously explained as optimal behavior based on 
 holistic sensory representations” (Mao & Stocker\, 2024).\n\nReference: 
 Mao\, J.\, & Stocker\, A. A. (2024). Sensory Perception Is a Holistic Infe
 rence Process. Psychological Review. https://doi.org/10.1037/rev0000457
LOCATION:https://cam-ac-uk.zoom.us/j/92612577704?pwd=MUtqMjVQdXNmUTVIYjRkM
 G1NUW9GZz09
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