Bellas D N, Novelly R A, Eskenazi B, Wasserstein J
Braintree Hospital, MA.
Cortex. 1988 Jun;24(2):267-75. doi: 10.1016/s0010-9452(88)80035-2.
Unilateral neglect is a syndrome primarily occurring with right hemisphere--particularly right parietal lobe--brain damage and involving the failure to respond to stimuli presented to the left side of the body and space. Unilateral displacement (a less severe manifestation of the neglect syndrome) involves the accurate identification of a stimulus, but the displacement or mislocalization of that stimulus to the opposite side of the body and space. This study investigated two major theories of unilateral neglect utilizing the primarily ipsilaterally innervated olfactory sense. The sensory theory states that unilateral neglect is due to a diminished sensory input, whereas the representational theory states that it is due to a disordered internal representation which is not dependent on sensory input. Results revealed that right hemisphere lesion patients with left unilateral neglect exhibited a significantly greater number of displacements in their left nostril on olfactory double simultaneous stimulation, consistent with the representational theory.
单侧忽视是一种主要发生于右半球（尤其是右顶叶）脑损伤的综合征，表现为对呈现于身体和空间左侧的刺激无反应。单侧移位（忽视综合征的一种不太严重的表现形式）涉及对刺激的准确识别，但该刺激向身体和空间对侧的移位或定位错误。本研究利用主要同侧支配的嗅觉来探究单侧忽视的两种主要理论。感觉理论认为单侧忽视是由于感觉输入减少，而表征理论则认为是由于不依赖感觉输入的内部表征紊乱所致。结果显示，患有左侧单侧忽视的右半球损伤患者在嗅觉双侧同时刺激时左鼻孔的移位数量显著更多，这与表征理论相符。
