论文部分内容阅读
时间知觉是人类的一项基本能力.日常生活经验表明时间知觉容易受到情绪的影响.但是在前人的研究中,这些影响往往伴随着主动注意和外显的运动反应.这里关注的是不伴随主动注意和外显运动反应的内隐时间知觉是否受到情绪面孔的影响.被试在主动完成一个由情绪面孔组成的视觉辨别任务的同时,被动地听一系列声音刺激.声音刺激的刺激启动异步时间(stimulus onset asynchrony,SOA)中,80%是标准SOA(800ms),20%是偏差SOA(400,600 ms).对频繁出现的标准SOA和偶尔出现的偏差SOA诱发的事件相关电位(event-related potential,ERP)进行记录.2个短的偏差SOA(400和600ms)引发了2个变化相关的ERP成分:失匹配负波(the mismatch negativity,MMN)和P3a.代表对无规律变化早期检测的MMN波幅受到了情绪面孔的影响.与愉快和中性面孔相比,恐惧面孔降低了MMN波幅.对于400ms偏差SOA,与恐惧面孔和中性面孔相比,愉快面孔增加了P3a波幅.该ERP研究提示听觉通道的内隐时间知觉受到情绪面孔的影响,恐惧面孔降低了内隐时间知觉的准确性.
Perception of time is a basic human ability, and daily life experience shows that time perception is easily affected by emotions, but in previous studies these effects were often accompanied by active attention and explicit motor responses. Active attention and explicit movement reaction of the implicit perception of time whether or not affected by emotions face.The participants in the initiative to complete a visual face composed of emotional faces at the same time, passively listen to a series of sound stimuli.Stimulus stimulus start asynchronous 80% is standard SOA (800ms) and 20% is Deviation SOA (400,600 ms) in the stimulus onset asynchrony (SOA). For the frequently occurring standard SOA and the occasional deviation SOA-induced event-related potential, ERP) .2 short deviations SOA (400 and 600ms) triggered two change-related ERP components: the mismatch negativity (MMN) and P3a. Representations of the early detection of irregular change The MMN amplitude was affected by the emotional faces, which reduced the MMN amplitude compared with the happy and neutral faces.For the 400ms deviation SOA, compared with the fear faces and the neutral faces, P3a face increased volatility. This study suggests that the auditory channel ERP implicit time perception influenced by emotional faces, the faces of fear reduces the accuracy of implicit time perception.