Synaptic pruning

Synaptic pruning or axon pruning is the process of synapse elimination that occurs between early childhood and the onset of puberty in many mammals, including humans. Pruning starts near the time of birth and is completed by the time of sexual maturation in humans. At birth, the human brain consists of approximately 86 (± 8) billion neurons. The infant brain will increase in size by a factor of up to 5 by adulthood. Two factors contribute to this growth: the growth of synaptic connections between neurons, and the myelination of nerve fibers; the total number of neurons, however, remains the same. Pruning is influenced by environmental factors and is widely thought to represent learning. After adolescence, the volume of the synaptic connections decreases again due to synaptic pruning.

单词	Synaptic pruning
释义	Synaptic pruning 原声例句简单心理学 Everyone loses gray matter between childhood and adulthood as part of a normal process called synaptic pruning, where some connections are lost, but the ones you keep get stronger. 每个人在童年和成年之间都会失去灰质，这是一种称为突触修剪的正常过程的一部分，在这个过程中，一些连接会丢失，但保留下来的连接会增强。英语百科 Synaptic pruning Synaptic pruning or axon pruning is the process of synapse elimination that occurs between early childhood and the onset of puberty in many mammals, including humans. Pruning starts near the time of birth and is completed by the time of sexual maturation in humans. At birth, the human brain consists of approximately 86 (± 8) billion neurons. The infant brain will increase in size by a factor of up to 5 by adulthood. Two factors contribute to this growth: the growth of synaptic connections between neurons, and the myelination of nerve fibers; the total number of neurons, however, remains the same. Pruning is influenced by environmental factors and is widely thought to represent learning. After adolescence, the volume of the synaptic connections decreases again due to synaptic pruning.
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