经颅磁刺激测量的镜像和反镜像效应的时间进程。
Timecourse of mirror and counter-mirror effects measured with transcranial magnetic stimulation.
作者信息
Cavallo Andrea, Heyes Cecilia, Becchio Cristina, Bird Geoffrey, Catmur Caroline
机构信息
Università di Torino, Dipartimento di Psicologia, Centro di Scienza Cognitiva, Turin, Italy, All Souls College, University of Oxford, Oxford, OX1 4AL, UK, Department of Experimental Psychology, University of Oxford, Oxford OX1 3UD, UK, MRC Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Kings College London, London SE5 8AF, UK, and Department of Psychology, University of Surrey, Guildford GU2 7XH, UK.
Università di Torino, Dipartimento di Psicologia, Centro di Scienza Cognitiva, Turin, Italy, All Souls College, University of Oxford, Oxford, OX1 4AL, UK, Department of Experimental Psychology, University of Oxford, Oxford OX1 3UD, UK, MRC Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Kings College London, London SE5 8AF, UK, and Department of Psychology, University of Surrey, Guildford GU2 7XH, UKUniversità di Torino, Dipartimento di Psicologia, Centro di Scienza Cognitiva, Turin, Italy, All Souls College, University of Oxford, Oxford, OX1 4AL, UK, Department of Experimental Psychology, University of Oxford, Oxford OX1 3UD, UK, MRC Social, Genetic & Developmental Psychiatry Centre, Institute of Psychiatry, Kings College London, London SE5 8AF, UK, and Department of Psychology, University of Surrey, Guildford GU2 7XH, UK.
出版信息
Soc Cogn Affect Neurosci. 2014 Aug;9(8):1082-8. doi: 10.1093/scan/nst085. Epub 2013 May 23.
The human mirror system has been the subject of much research over the past two decades, but little is known about the timecourse of mirror responses. In addition, it is unclear whether mirror and counter-mirror effects follow the same timecourse. We used single-pulse transcranial magnetic stimulation to investigate the timecourse of mirror and counter-mirror responses in the human brain. Experiment 1 demonstrated that mirror responses can be measured from around 200 ms after observed action onset. Experiment 2 demonstrated significant effects of counter-mirror sensorimotor training at all timepoints at which a mirror response was found in Experiment 1 (i.e. from 200 ms onward), indicating that mirror and counter-mirror responses follow the same timecourse. By suggesting similarly direct routes for mirror and counter-mirror responses, these results support the associative account of mirror neuron origins whereby mirror responses arise as a result of correlated sensorimotor experience during development. More generally, they contribute to theorizing regarding mirror neuron function by providing some constraints on how quickly mirror responses can influence social cognition.
在过去二十年里，人类镜像系统一直是众多研究的主题，但对于镜像反应的时间进程却知之甚少。此外，尚不清楚镜像和反镜像效应是否遵循相同的时间进程。我们使用单脉冲经颅磁刺激来研究人类大脑中镜像和反镜像反应的时间进程。实验1表明，在观察到的动作开始后约200毫秒左右就可以测量到镜像反应。实验2表明，在实验1中发现镜像反应的所有时间点（即从200毫秒起），反镜像感觉运动训练都有显著效果，这表明镜像和反镜像反应遵循相同的时间进程。通过为镜像和反镜像反应提出类似的直接路径，这些结果支持了镜像神经元起源的关联理论，即镜像反应是在发育过程中相关感觉运动经验的结果。更广泛地说，它们通过对镜像反应影响社会认知的速度提供一些限制，为镜像神经元功能的理论化做出了贡献。
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