Bub D, Audet T, Lecours A R
Centre de Recherche du Centre Hospitalier Côte-des-Neiges, Montréal.
Cortex. 1990 Jun;26(2):227-37. doi: 10.1016/s0010-9452(13)80352-8.
Results of a previous experiments designed to test if there is a right hemisphere superiority over the left hemisphere in the capacity to react quickly to a stimulus have not lead to an unambiguous conclusion, although the majority of studies indicate that right-brain-damaged patients are generally slower than left-brain-damaged patients. The present experiment re-examines the speed of reaction time to auditory stimulation in a population of brain-damaged patients. Each case was presented with 120 auditory events and variable inter-trial intervals (from 1 s to 15 s). To ensure homogeneity of the population tested, only patients with a cerebro-vascular accident were chosen. The results show that the right-brain-damaged patients were not generally slower than left-brain-damaged patients. However, a marked deterioration in performance over time was observed in the right-hemisphere group while a small amount of improvement was found in the normal and left-brain-damaged patients. The outcome is discussed in terms of a sustained attention deficit associated with right-hemisphere damage.
先前有实验旨在测试在对刺激做出快速反应的能力方面，右半球是否比左半球更具优势，尽管大多数研究表明右脑损伤患者通常比左脑损伤患者反应更慢，但这些实验结果并未得出明确结论。本实验重新研究了脑损伤患者群体对听觉刺激的反应时间速度。每个病例都要面对120次听觉事件以及不同的试次间隔（从1秒到15秒）。为确保测试群体的同质性，仅选择了脑血管意外患者。结果显示，右脑损伤患者一般并不比左脑损伤患者反应更慢。然而，右半球组患者的表现随时间出现了明显恶化，而正常组和左脑损伤患者则有少量改善。根据与右半球损伤相关的持续性注意力缺陷对这一结果进行了讨论。
