失匹配负波研究的主要争论与动向

失匹配负波(MMN)是小概率刺激ERP减大概率刺激ERP的差异负波,可由Oddball范式和多特征选择范式获得。近年研究发现MMN不仅存在于听觉通道,还存在于其他通道,且其波幅可反映自动加工,潜伏期则可反映控制加工。MMN可能反映与错误负波ERN相同或相似的加工过程,MMN反映社会认知加工的观点还需进一步研究。未来研究需整合高时间和空间精度技术,从行为和认知神经科学多层面来开展复杂社会刺激的研究,以便阐明MMN可能反映社会认知加工的性质,并在此基础上增强对MMN与ERN的比较研究。

The Main Controversy and Current Directions on Mismatch Negativity

Mismatch negativity （MMN） is a change-specific component which results from subtracting the ERPs elicited by frequent auditory stimuli from that elicited by the deviant one. It can be acquired by the traditional oddball paradigm, or by the multi-feature optimal paradigm which is recently proposed by Naatanen. The studies on MMN found that it is not auditory-specific： it not only occurs in auditory modality, but also in other modalities, such as visual moality. Moreover, they pointed out that the amplitude of MMN can reflect automatic processing, whereas its latency reflects controlled processing. Questions remain with regard to whether MMN can reflect social or affeetive processing, and future research can be done in this line.