Brain and nerves develop structures and functions {brain, development} {nervous system, development}. Neurons move by amoeboid motion to final locations, guided by glia. At final locations, special molecules bind neurons together in layers or masses. Neurons send out dendrites and axons, which grow toward targets marked by chemicals, mostly to same-type neurons. Brain makes more dendrites and axons than it can use, so it eliminates many after growth finishes.
multisensory to unimodal development
During maturation, brain transforms multisensory regions to unimodal regions.
topological maps
During development, brain coordinates sense-organ movements and perceptions using attention mechanisms, to align sensory maps in superior colliculus and to maximize sensitivity.
consciousness
During human development, consciousness increases gradually as brain develops structures and functions [Aoki and Siekevitz, 1988] [Borrell and Callaway, 2002] [Carey, 1987] [Schaeffer-Simmern, 1948]. Embryos before three weeks old are unlikely to have sensations, because neurons are just forming. Children older than three can remember sensations.
Biological Sciences>Zoology>Development>Nervous System
4-Zoology-Development-Nervous System
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Date Modified: 2022.0224