UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Fast Sequences of Non-spatial State Representations in Humans

Kurth-Nelson, Z; Economides, M; Dolan, RJ; Dayan, P; (2016) Fast Sequences of Non-spatial State Representations in Humans. Neuron , 91 (1) pp. 194-204. 10.1016/j.neuron.2016.05.028. Green open access

[img]
Preview
Text
Fast Sequences of Non-spatial State Representations in Humans.pdf - Published version

Download (1MB) | Preview

Abstract

Fast internally generated sequences of neural representations are suggested to support learning and online planning. However, these sequences have only been studied in the context of spatial tasks and never in humans. Here, we recorded magnetoencephalography (MEG) while human subjects performed a novel non-spatial reasoning task. The task required selecting paths through a set of six visual objects. We trained pattern classifiers on the MEG activity elicited by direct presentation of the visual objects alone and tested these classifiers on activity recorded during periods when no object was presented. During these object-free periods, the brain spontaneously visited representations of approximately four objects in fast sequences lasting on the order of 120 ms. These sequences followed backward trajectories along the permissible paths in the task. Thus, spontaneous fast sequential representation of states can be measured non-invasively in humans, and these sequences may be a fundamental feature of neural computation across tasks.

Type: Article
Title: Fast Sequences of Non-spatial State Representations in Humans
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.neuron.2016.05.028
Publisher version: http://dx.doi.org/10.1016/j.neuron.2016.05.028
Language: English
Additional information: © 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Imaging Neuroscience
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1501564
Downloads since deposit
46Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item