TY - JOUR
T1 - Adaptation decorrelates shape representations
AU - Mattar, Marcelo G.
AU - Olkkonen, Maria
AU - Epstein, Russell A.
AU - Aguirre, Geoffrey K.
N1 - Funding Information:
This project was supported by NIH R21-EY-022751-02, Core Grant for Vision Research P30 EY001583, and the Neuroscience Neuroimaging Center Core Grant P30 NS045839. MO received support from the Academy of Finland Academy Fellow program, grant 287506. We thank Toni Saarela for valuable help with stimulus generation, and for the staircase code and Toni Saarela and Stacey Aston for helpful comments on the manuscript.
Publisher Copyright:
© 2018, The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Perception and neural responses are modulated by sensory history. Visual adaptation, an example of such an effect, has been hypothesized to improve stimulus discrimination by decorrelating responses across a set of neural units. While a central theoretical model, behavioral and neural evidence for this theory is limited and inconclusive. Here, we use a parametric 3D shape-space to test whether adaptation decorrelates shape representations in humans. In a behavioral experiment with 20 subjects, we find that adaptation to a shape class improves discrimination of subsequently presented stimuli with similar features. In a BOLD fMRI experiment with 10 subjects, we observe that adaptation to a shape class decorrelates the multivariate representations of subsequently presented stimuli with similar features in object-selective cortex. These results support the long-standing proposal that adaptation improves perceptual discrimination and decorrelates neural representations, offering insights into potential underlying mechanisms.
AB - Perception and neural responses are modulated by sensory history. Visual adaptation, an example of such an effect, has been hypothesized to improve stimulus discrimination by decorrelating responses across a set of neural units. While a central theoretical model, behavioral and neural evidence for this theory is limited and inconclusive. Here, we use a parametric 3D shape-space to test whether adaptation decorrelates shape representations in humans. In a behavioral experiment with 20 subjects, we find that adaptation to a shape class improves discrimination of subsequently presented stimuli with similar features. In a BOLD fMRI experiment with 10 subjects, we observe that adaptation to a shape class decorrelates the multivariate representations of subsequently presented stimuli with similar features in object-selective cortex. These results support the long-standing proposal that adaptation improves perceptual discrimination and decorrelates neural representations, offering insights into potential underlying mechanisms.
UR - http://www.scopus.com/inward/record.url?scp=85053534164&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85053534164&partnerID=8YFLogxK
U2 - 10.1038/s41467-018-06278-y
DO - 10.1038/s41467-018-06278-y
M3 - Article
C2 - 30232324
AN - SCOPUS:85053534164
SN - 2041-1723
VL - 9
JO - Nature communications
JF - Nature communications
IS - 1
M1 - 3812
ER -