Data supporting "Learning to optimize perceptual decisions through suppressive interactions in the human brain"

Frangou, Poly; Emir, U E; Karlaftis, Vasileios; Nettekoven, Caroline; Hinson, Emily L.; Larcombe, Stephanie; Bridge, Holly; Stagg, Charlotte J.; Kourtzi, Zoe

doi:10.17863/cam.33382

2019

DOI: 10.17863/cam.33382

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Data supporting "Learning to optimize perceptual decisions through suppressive interactions in the human brain"

Poly Frangou¹,

U E Emir²,

Vasileios Karlaftis³

et al.

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Learning to optimize perceptual decisions through suppressive interactions in the human brain

et al. 2019

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Translating noisy sensory signals to perceptual decisions is critical for successful interactions in complex environments. Learning is known to improve perceptual judgments by filtering external noise and task-irrelevant information. Yet, little is known about the brain mechanisms that mediate learning-dependent suppression. Here, we employ ultra-high field magnetic resonance spectroscopy of GABA to test whether suppressive processing in decision-related and visual areas facilitates perceptual judgments during training. We demonstrate that parietal GABA relates to suppression of task-irrelevant information, while learning-dependent changes in visual GABA relate to enhanced performance in target detection and feature discrimination tasks. Combining GABA measurements with functional brain connectivity demonstrates that training on a target detection task involves local connectivity and disinhibition of visual cortex, while training on a feature discrimination task involves inter-cortical interactions that relate to suppressive visual processing. Our findings provide evidence that learning optimizes perceptual decisions through suppressive interactions in decision-related networks.

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Learning to optimize perceptual decisions through suppressive interactions in the human brain

et al. 2019

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Data supporting "Learning to optimize perceptual decisions through suppressive interactions in the human brain"

Cited by 1 publication

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Learning to optimize perceptual decisions through suppressive interactions in the human brain

Learning to optimize perceptual decisions through suppressive interactions in the human brain

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