Multi-voxel pattern analysis in human hippocampal subfields.
Multi-voxel pattern analysis in human hippocampal subfields.
复制标题
人类海马子场中的多素模式分析。
DOI:
10.3389/fnhum.2012.00290
复制
发表时间:
2012
影响因子:
2.9
通讯作者:
Maguire EA
中科院分区:
文献类型:
--
作者:
Bonnici HM;Chadwick MJ;Kumaran D;Hassabis D;Weiskopf N;Maguire EA
A complete understanding of the hippocampus depends on elucidating the representations and computations that exist in its anatomically distinct subfields. High-resolution structural and functional MRI scanning is starting to permit insights into hippocampal subfields in humans. In parallel, such scanning has facilitated the use of multi-voxel pattern analysis (MVPA) to examine information present in the distributed pattern of activity across voxels. The aim of this study was to combine these two relatively new innovations and deploy MVPA in the hippocampal subfields. Delineating subregions of the human hippocampus, a prerequisite for our study, remains a significant challenge, with extant methods often only examining part of the hippocampus, or being unable to differentiate CA3 and dentate gyrus (DG). We therefore devised a new high-resolution anatomical scanning and subfield segmentation protocol that allowed us to overcome these issues, and separately identify CA1, CA3, DG, and subiculum (SUB) across the whole hippocampus using a standard 3T MRI scanner. We then used MVPA to examine fMRI data associated with a decision-making paradigm involving highly similar scenes that had relevance for the computations that occur in hippocampal subfields. Intra- and inter-rater scores for subfield identification using our procedure confirmed its reliability. Moreover, we found that decoding of information within hippocampal subfields was possible using MVPA, with findings that included differential effects for CA3 and DG. We suggest that MVPA in human hippocampal subfields may open up new opportunities to examine how different types of information are represented and processed at this fundamental level.
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影响因子:
16.2
作者:
Fanselow, Michael S.;Dong, Hong-Wei
通讯作者:
Dong, Hong-Wei
影响因子:
2.6
作者:
Chadwick MJ;Bonnici HM;Maguire EA
通讯作者:
Maguire EA
影响因子:
2
作者:
Chen, Janice;Olsen, Rosanna K.;Wagner, Anthony D.
通讯作者:
Wagner, Anthony D.
DOI:
10.1016/j.cub.2010.01.053
发表时间:
2010-03-23
期刊:
Current biology : CB
影响因子:
--
作者:
Chadwick MJ;Hassabis D;Weiskopf N;Maguire EA
通讯作者:
Maguire EA
影响因子:
16.2
作者:
Carr, Valerie A.;Rissman, Jesse;Wagner, Anthony D.
通讯作者:
Wagner, Anthony D.