Spinelli D, Zoccolotti P
Dipartimento di Psicologia, Università di Roma La Sapienza, Italy.
Neuropsychologia. 1992 Apr;30(4):393-401. doi: 10.1016/0028-3932(92)90112-y.
Contrast sensitivity for stationary and drifting sinusoidal gratings of different spatial frequencies was measured in 17 brain damaged patients (five left-brain damaged and 12 right-brain damaged patients, six of whom showed symptoms of spatial hemi-neglect). Twenty-nine combinations of spatio-temporal stimuli were considered in the drifting condition. No specific deficit for the group of patients with neglect symptom in the perception of moving and stationary gratings was observed. Also, no systematic deficit for perceiving the direction of motion--toward the neglect hemispace or away from it--was apparent. A small, selective impairment in the detection of stationary or very slow drifting gratings of low spatial frequency was observed in the presence of unilateral cortical damage, independently from its side (left or right) and from the presence of neglect. Some difficulty to detect the direction of motion was observed in a few individual patients.
对17名脑损伤患者（5名左脑损伤患者和12名右脑损伤患者，其中6名表现出空间半侧忽视症状）测量了不同空间频率的静止和漂移正弦光栅的对比敏感度。在漂移条件下考虑了29种时空刺激组合。未观察到有忽视症状的患者组在移动和静止光栅感知方面存在特定缺陷。此外，在感知运动方向（朝向忽视半侧空间或远离它）方面也没有明显的系统性缺陷。在存在单侧皮质损伤的情况下，无论损伤部位在左侧还是右侧以及是否存在忽视症状，均观察到在检测低空间频率的静止或非常缓慢漂移的光栅时存在轻微的选择性损伤。在少数个体患者中观察到了一些检测运动方向的困难。
