Dissociation of anosognosia and phantom movement during the Wada test.
Dissociation of anosognosia and phantom movement during the Wada test.
复制标题
和田测试期间失认与幻觉运动的分离。
DOI：
10.1136/jnnp.69.6.820
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Heilman,KM
中科院分区：
文献类型：
--
作者：
Lu,LH;Barrett,AM;Cibula,JE;Gilmore,RL;Fennell,EB;Heilman,KM
OBJECTIVEPatients who misperceive that they are moving their paralysed arm (phantom movements) may not recognise its weakness. Therefore, the relation between phantom limb movements and anosognosia for hemiplegia during selective right hemispheric anaesthesia (the Wada test) was examined.METHODSNine patients with intractable epilepsy underwent the Wada test. During the right hemispheric injection, after the onset of hemiparesis, anosognosia was assessed by asking patients if they were weak. The patient's vision was limited such that they could not see the position of their limbs. Phantom movements were tested for by asking patients to attempt to lift their left upper limb, and to demonstrate their left limb's position by placing their right limb in the same position as their left. Proprioception was tested by lifting the patient's paretic upper limb and having patients demonstrate this position by lifting their right limb to the same position.RESULTSThree patients experienced left phantom limb movements, and five were anosognosic for their hemiplegia. However, phantom movement occurred in only one patient with anosognosia. The other two patients with phantom movement were without anosognosia. The patient with phantom movement and anosognosia had impaired proprioception. The two patients with phantom movement but without anosognosia had intact proprioception.CONCLUSIONSPhantom movement in the presence of a proprioceptive deficit could contribute to anosognosia. However, anosognosia and phantom movement are dissociable; therefore phantom movement cannot alone account for anosognosia. Because phantom movement occurred with and without proprioceptive deficits, proprioceptive loss is not a prerequisite for phantom movement.
