Newman J P
Jerusalem Institute for the Study of Psychological Stress, Israel.
Int J Neurosci. 1990 May;52(1-2):1-9. doi: 10.3109/00207459008994237.
Stroop color-word stimuli permit examination of relative hemispheric contributions to cognition. Subjects of varying trait anxiety levels underwent situational arousal manipulations. Discrete color-word stimuli were projected to the visual half-fields; motor matching responses were made. Trait anxiety affected left-hemisphere activation. Responding was faster and more accurate for moderate than low trait anxiety; at high levels, the left hemisphere became overactivated and inefficient. Situational arousal facilitated right-hemisphere performance; latencies were shorter and accuracy increased in the aroused compared with the relaxed condition. Situational arousal interacted with trait anxiety; highly trait-anxious subjects had longer latencies and decreased accuracy when relaxed than when aroused. A paradoxical effect of trait anxiety is rigidity and stereotypy of cognitive functioning, impairing ability to assume appropriate alternative cognitive modes.
斯特鲁普颜色-文字刺激可用于检验相对半球对认知的贡献。不同特质焦虑水平的受试者接受了情境唤醒操作。离散的颜色-文字刺激投射到视觉半视野；做出运动匹配反应。特质焦虑影响左半球激活。中度特质焦虑的反应比低特质焦虑更快、更准确；在高特质焦虑水平时，左半球过度激活且效率低下。情境唤醒促进右半球表现；与放松状态相比，唤醒状态下的反应时更短且准确性提高。情境唤醒与特质焦虑相互作用；高特质焦虑的受试者在放松时比唤醒时反应时更长且准确性降低。特质焦虑的一个矛盾效应是认知功能的僵化和刻板，损害了采用适当替代认知模式的能力。
