PSYC 3684 Lecture 7: 2/6/20
Document Summary
Neurogenesis: the proliferation of neurons through cell division. Ends: 18 weeks post conception (or never?) Synaptogenesis: the exuberant generation of neuronal connections. Determined by experience: synapses frequently activated are selectively preserved ( neural darwinism ); e. g. , speech sounds. E. g. , bilingual households start behind because they can"t prune as much but end up being ahead in the end. Plasticity: the capacity of the brain to be affected by experience. Sensitive periods : time period when human brain is especially sensitive to particular stimuli. Geese imprint 12-17 hours after birth and if not then never (meaning their survival rate will drop) Girl who was severely neglected and rescued at 12. Possibility she was born with some intellectual disability but researchers don"t know for sure. Locked in a room with no stimulation; no exposure to human touch or language. Tied up and lost a lot of motor function. E. g. , learning specific physical environment or vocabulary.
