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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Brain Cogn. 2014 Feb 17;89:104–111. doi: 10.1016/j.bandc.2014.01.006

Fig. 2.

Fig. 2

Brain development with age. Several changes occur at the histological and hormonal levels and continue across development. Synapse overproduction begins in mid-to- late childhood and is followed later by regressive elimination in late adolescence. Myelination, associated with the increase of white matter and related decrease in gray matter begins in early adolescence and continues through young adulthood. Gonadal hormonal rise, part of puberty, characterizes this period.