PSY-B - Psychology PSY-B 320 Chapter Notes - Chapter 8: Visual Cortex, Temporal Lobe, Parahippocampal Gyrus
22 Feb 2017
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Stages of brain development: cell birth (neurogenesis; gliogenesis, cell migration, cell differentiation, cell maturation (dendrite and axon growth, synaptogenesis (formation of synapses, cell death and synaptic pruning, myelogenesis (formation of myelin) Correlating behavior with nervous-system development: behaviors cannot emerge until the required neural machinery has developed, when that machinery is in place, related behaviors develop quickly through stages and are shaped significantly by epigenetic factors. Stages in the development of the grasping response. Anatomical changes & motor behaviors: axons from motor-cortex neurons myelinate about the time that reaching and grasping develop, a group of motor-cortex neurons known to control finger movements myelinate about the time pincer grasp develops. Increased motor dexterity is associated with a decrease in cortical thickness in the hand region of the left motor cortex of right-handers. Language onset is usually between 1 and 2 years of age. Language acquisition is largely complete by age 12: neural changes during this time:
