Spatial neglect encompasses impaired verticality representation after right hemisphere stroke

被引:7
作者
Lafitte, Remi [1 ]
Jeager, Marie [1 ]
Piscicelli, Celine [1 ]
Dai, Shenhao [1 ]
Lemaire, Camille [1 ]
Chrispin, Anne [1 ]
Davoine, Patrice [1 ]
Dupierrix, Eve [1 ]
Perennou, Dominic [1 ]
机构
[1] Univ Grenoble Alpes, UMR CNRS 5105 Neuropsychol & Neurocognit, CHU Grenoble Alpes, South Hosp,Dept Neurorehabil, Grenoble, France
关键词
body neglect; extra-body neglect; postural vertical; spatial neglect; spatial representation; visual vertical; VESTIBULAR STIMULATION; EXTRAPERSONAL NEGLECT; HEMISPATIAL NEGLECT; UNILATERAL NEGLECT; BODY ORIENTATION; PERSONAL NEGLECT; PERCEPTION; ATTENTION; LATEROPULSION; DISORDERS;
D O I
10.1111/nyas.14938
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Spatial neglect after right hemisphere stroke (RHS) was recently found to encompass lateropulsion, a deficit in body orientation with respect to gravity caused by altered brain processing of graviception. By analogy, we hypothesized that spatial neglect after RHS might encompass an altered representation of verticality. We also assumed a strong relation between body neglect and impaired postural vertical, both referring to the body. To tackle these issues, we performed contingency and correlation analyses between two domains of spatial neglect (body, extra-body) and two modalities of verticality perception (postural, visual) in 77 individuals (median age = 67) with a first-ever subacute RHS (1-3 months). All individuals with a transmodal (postural and visual) tilt in verticality perception (n = 26) had spatial neglect, but the reverse was not found. Correlation and multivariate analyses revealed that spatial neglect (and notably body neglect) was associated more with postural than visual vertical tilts. These findings indicate that after RHS, an impaired verticality representation results from a kind of graviceptive neglect, bearing first on somaesthetic graviception and second on vestibular graviception. They also suggest that the human brain uses not only a mosaic of 2D representations but also 3D maps involving a transmodal representation of verticality.
引用
收藏
页码:140 / 152
页数:13
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