Berntson G G, Boysen S T, Torello M W
Department of Psychology, Ohio State University, Columbus 43212.
Dev Psychobiol. 1993 Sep;26(6):305-19. doi: 10.1002/dev.420260602.
We describe the first brain event-related potential (ERP) study of cognitive processes in the chimpanzee. In an extension of our studies on the ontogeny of vocal perception, ERP measures were obtained during the presentation of simple nonsignal stimuli as well as conspecific and human vocalizations. We initially confirmed findings from humans and monkeys of the appearance of a long-latency positivity in the ERP waveform to a rare stimulus in an oddball paradigm. This ERP component is reminiscent of the P3a reported in humans under similar (passive) experimental conditions. We further demonstrated that both conspecific and human vocal stimuli having affective significance also enhanced late positive components of the ERP. These late positive components displayed a predominant fronto-central distribution, with a maxima at Cz. Additionally, responses to adaptively significant vocal stimuli showed a right hemisphere laterality, whereas no significant laterality was observed with the rare stimulus in the oddball paradigm. Results document the feasibility of ERP measures in chimpanzees and their potential utility in the study of the ontogeny and phylogeny of vocal perception.
我们描述了对黑猩猩认知过程进行的首次脑事件相关电位（ERP）研究。在我们对语音感知个体发生研究的扩展中，在呈现简单非信号刺激以及同种和人类发声时获取了ERP测量值。我们最初证实了人类和猴子在奇偶数范式中对罕见刺激的ERP波形中出现长潜伏期正波的研究结果。这个ERP成分让人联想到在类似（被动）实验条件下人类报告的P3a。我们进一步证明，具有情感意义的同种和人类语音刺激也增强了ERP的晚期正波成分。这些晚期正波成分主要分布在前额中央，在Cz处有最大值。此外，对具有适应性意义的语音刺激的反应显示出右半球优势，而在奇偶数范式中对罕见刺激未观察到明显的优势。结果证明了ERP测量在黑猩猩中的可行性及其在语音感知个体发生和系统发生研究中的潜在效用。
