Hick-Hyman Law is Mediated by the Cognitive Control Network in the Brain

Cerebral Cortex
Tingting WuJin Fan

Abstract

The Hick-Hyman law describes a linear increase in reaction time (RT) as a function of the information entropy of response selection, which is computed as the binary logarithm of the number of response alternatives. While numerous behavioral studies have provided evidence for the Hick-Hyman law, its neural underpinnings have rarely been examined and are still unclear. In this functional magnetic resonance imaging study, by utilizing a choice reaction time task to manipulate the entropy of response selection, we examined brain activity mediating the input and the output, as well as the connectivity between corresponding regions in human participants. Beyond confirming the Hick-Hyman law in RT performance, we found that activation of the cognitive control network (CCN) increased and activation of the default mode network (DMN) decreased, both as a function of entropy. However, only the CCN, but not the DMN, was involved in mediating the relationship between entropy and RT. The CCN was involved in both stages of uncertainty representation and response generation, while the DMN was mainly involved at the stage of uncertainty representation. These findings indicate that the CCN serves as a core entity underlying the Hick-Hyman law by...Continue Reading

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Citations

Feb 7, 2018·The Journal of Comparative Neurology·Alfredo SpagnaJin Fan
Jan 12, 2019·Journal of Clinical and Experimental Neuropsychology·Laura E KorthauerWilliam C Heindel
Nov 2, 2019·The Journal of Comparative Neurology·Tingting WuJin Fan
Jul 30, 2019·Journal of Alzheimer's Disease : JAD·Hao HeYuejia Luo
Mar 1, 2019·Scientific Reports·Yu ChenJin Fan
Jan 4, 2021·Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists·Jacqueline F I Anderson, Emily Cockle
Sep 14, 2018·Entropy·Khalid Sayood
Feb 9, 2021·Frontiers in Human Neuroscience·John R Kershner
Feb 25, 2019·NeuroImage·Tingting WuJin Fan
Nov 7, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Alfredo SpagnaJin Fan

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