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Neural Evidence for Categorical Biases in Location and Orientation Representations in a Working Memory Task by Gi-Yeul Bae is a Neuroscience article available to read on EtoBox.

What is Neural Evidence for Categorical Biases in Location and Orientation Representations in a Working Memory Task about?

Previous research demonstrated that visual representations in working memory exhibit biases with respect to the categorical structure of the stimulus space. However, a majority of those studies used behavioral measures of working memory, and it is not clear whether the working memory representations per se are influenced by the categorical structure or whether the biases arise in decision or response processes during the report. Here, I applied a multivariate decoding technique to EEG data collected during working memory tasks to determine whether neural activity associated with the representations in working memory is categorically biased prior to the report. I found that the decoding of spatial working memory was biased away from the nearest cardinal location, consistent with the biases observed in the behavioral responses. In a follow-up experiment which was designed to prevent the use of a response preparation strategy, I found that the decoding still exhibited categorical biases. Together, these results provide neural evidence that working memory representations themselves are categorically biased, imposing important constraints on the models of working memory representations.

Who reads Neural Evidence for Categorical Biases in Location and Orientation Representations in a Working Memory Task?

Author

Gi-Yeul Bae

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Neuroscience (Life Sciences)