One thing leads to another: anticipating visual object identity based on associative-memory template
External author(s) only
MetadataShow full item record
Sage E.P. Boettcher, Mark G. Stokes, Anna C. Nobre and Freek van Ede. One thing leads to another: anticipating visual object identity based on associative-memory template. Journal of Neuroscience;Vol. 40, Issue 18
Probabilistic associations between stimuli afford memory templates that guide perception through pro-active anticipatory mechanisms. A great deal of work has examined the behavioural consequences and human electrophysiological substrates of anticipation following probabilistic memory cues that carry spatial or temporal information to guide perception. However, less is understood about the electrophysiological substrates linked to anticipating the sensory content of events based on recurring associations between successive events. Here, we demonstrate behavioural and electrophysiological signatures of utilising associative-memory templates to guide perception, while equating spatial and temporal anticipation (Experiment 1 and 2), as well as target probability and response demands (Experiment 2). By recording the electroencephalogram (EEG) in the two experiments (N=55; 24 Female), we show that two markers in human electrophysiology implicated in spatial and temporal anticipation also contribute to anticipation of perceptual identity: attenuation of alpha band oscillations and the contingent negative variation (CNV). Taken together, our results show that memory-guided identity templates proactively impact perception and are associated with anticipatory states of attenuated alpha oscillations and the CNV. Furthermore, by isolating object-identity anticipation from spatial and temporal anticipation, our results suggest a role for alpha attenuation and the CNV in specific visual content anticipation beyond general changes in neural excitability or readiness.
This research was funded by the Clarendon Fund and the Mary Somerville Graduate School Scholarship to S.E.P.B, a Marie Skłodowska-Curie Fellowship from the European Commission (ACCESS2WM) to F.v.E., a Wellcome Trust Senior Investigator Award (104571/Z/14/Z) and a James S. McDonnell Foundation Understanding Human Cognition Collaborative Award (220020448) to A.C.N., James S. McDonnell Foundation Scholar Award (220020405) and an ESRC grant (ES/S015477/1) to M.G.S, and by the NIHR Oxford Health Biomedical Research Centre. The Wellcome Centre for Integrative Neuroimaging is supported by core funding from the Wellcome Trust (203139/Z/16/Z). We also wish to thank Sammi Chekroud and Alex Board for help with and data acquisition, as well as Dejan Draschkow for helpful discussions.This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
Published online at:
- Neuroscience