Attention dysfunction in cirrhotic patients: An inquiry on the role of executive control, attention orienting and focusing

被引：59

作者：

Amodio P. ^{[1
,4
]}

Schiff S. ^{[1
,2
]}

Del Piccolo F. ^{[1
]}

Mapelli D. ^{[1
,3
]}

Gatta A. ^{[1
]}

Umiltà C. ^{[3
]}

机构：

[1] Department of Clinical and Experimental Medicine, Cirmanmec University of Padova

[2] Department of Neurological and Vision Science, University of Verona

[3] Department of General Psychology, Cirmanmec University of Padova

[4] Clinica Medica 5, 35128 Padova, Via Giustiniani

来源：

Metabolic Brain Disease | 2005年 / 20卷 / 2期

关键词：

Attention; Attention focusing; Attention orienting; Divided attention; EEG; Liver cirrhosis; TMT-A;

D O I：

10.1007/s11011-005-4149-3

中图分类号：

学科分类号：

摘要：

Attention alterations are reported in cirrhotics. Aiming at clarifying attention functioning in cirrhotics, an inquiry on the functioning of the anterior (AAS) and the posterior (PAS) attention system was performed. Thirty-six cirrhotics without overt hepatic encephalopathy (24 with EEG or TMT-A alterations) and 16 matched control subjects were enrolled. The AAS was studied by the Stroop task measuring selective attention control, the PAS was studied by the Posner task and the Focus task measuring automatic covert orienting and visual focusing of attention respectively. Cirrhotics presented a task-dependent psychomotor slowing (Stroop > Posner > Focus) with an increased percentage of errors in the incongruent condition of the Stroop task [F(1, 57) = 4.9, p < 0.03]. Class C patients had both a selective slowing [F(1, 33) = 4.3, p < 0.05] and an increased percentage of errors in the incongruent condition [F(1, 34) = 5.1, p < 0.05] compared to Class A-B patients and controls. The patients with an altered EEG performed the Stroop test significantly slowly than those without EEG alterations [F(1, 41) = 8.9, p < 0.01] and with a clear trend for a higher number of errors in the incongruent condition [F(1, 39) = 3.8, p < 0.06]. In contrast, attention orienting and focusing were maintained. In conclusion, the AAS is more sensitive than the PAS to the early stages of hepatic encephalopathy. © 2005 Springer Science+Business Media, Inc.

引用

页码：115 / 127

页数：12

共 31 条

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