Multivariate lesion-symptom mapping using support vector regression.
Multivariate lesion-symptom mapping using support vector regression.
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DOI:
10.1002/hbm.22590
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发表时间:
2014-12
影响因子:
4.8
通讯作者:
Wang, Ze
中科院分区:
文献类型:
--
作者:
Zhang, Yongsheng;Kimberg, Daniel Y.;Coslett, H. Branch;Schwartz, Myrna F.;Wang, Ze
Lesion analysis is a classic approach to study brain functions. Because brain function is a result of coherent activations of a collection of functionally related voxels, lesion-symptom relations are generally contributed by multiple voxels simultaneously. Although voxel-based lesion symptom mapping (VLSM) has made substantial contributions to the understanding of brain-behavior relationships, a better understanding of the brain-behavior relationship contributed by multiple brain regions needs a multivariate lesion symptom mapping (MLSM). The purpose of this paper was to develop an MLSM using a machine learning-based multivariate regression algorithm: support vector regression (SVR). In the proposed SVR-LSM, the symptom relation to the entire lesion map as opposed to each isolated voxel is modeled using a non-linear function, so the inter-voxel correlations are intrinsically considered, resulting in a potentially more sensitive way to examine lesion-symptom relationships. To explore the relative merits of VLSM and SVR-LSM we used both approaches in the analysis of a synthetic dataset. SVR-LSM showed much higher sensitivity and specificity for detecting the synthetic lesion-behavior relations than VLSM. When applied to lesion data and language measures from patients with brain damages, SVR-LSM reproduced the essential pattern of previous findings identified by VLSM and showed higher sensitivity than VLSM for identifying the lesion-behavior relations. Our data also showed the possibility of using lesion data to predict continuous behavior scores.
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DOI:
10.1093/brain/aws354
发表时间:
2013-02
期刊:
Brain : a journal of neurology
影响因子:
--
作者:
Kümmerer D;Hartwigsen G;Kellmeyer P;Glauche V;Mader I;Klöppel S;Suchan J;Karnath HO;Weiller C;Saur D
通讯作者:
Saur D
影响因子:
--
作者:
Cherkassky, V
通讯作者:
Cherkassky, V
影响因子:
14.5
作者:
Mesulam, M. -Marsel;Wieneke, Christina;Rogalski, Emily J.
通讯作者:
Rogalski, Emily J.
影响因子:
3.2
作者:
Kimberg, Daniel Y.;Coslett, H. Branch;Schwartz, Myrna F.
通讯作者:
Schwartz, Myrna F.
影响因子:
5.7
作者:
LaConte, S;Strother, S;Hu, XP
通讯作者:
Hu, XP