R Henson1, T Shallice, R Dolan

  • 1Wellcome Department of Cognitive Neurology, Institute of Neurology, Institute of Cognitive Neuroscience and Department of Psychology, University College London, London WC1E 6BT, UK. r.henson@ucl.ac.uk

Science (New York, N.Y.)
|February 26, 2000
PubMed
概括

重复启动效应根据刺激的熟悉程度而有所不同. 不熟悉的刺激显示重复时大脑反应增加,而熟悉的刺激显示反应减少,影响神经处理.

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Crossing Over01:34

Crossing Over

Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
In order to...