PSYC 207 Lecture Notes - Lecture 3: White Matter, Prefrontal Cortex, Myelin
Document Summary
Concern for welfare: balance of risks and benefits, quality of life. Justice: fair and equitable treatment, vulnerable populations (cannot discriminate people based on their disadvantages because it is easier and cheaper than using the general population) Reporting research: problems include, overgeneralization, exaggeration of results, application to a different population. Statements of relative vs. absolute risk: (cid:862)50% lo(cid:449)er risk of x(cid:863) or (cid:862)35% (cid:373)ore likely to y(cid:863, baseline = 2/100. Axon: a long, thin fibre that can be very short or over 1m long. Myelin sheath: wrapped around the axon and acts as an insulator: without it, signals travel down the axon at 0. 5-10 m/s, with it they travel at 150 m/s. The number of neurons gained and lost as we age. The number of dendrites (which receive information from other neurons) Loss of the above results in the number of synapses: makes neurons less efficient at communicating with each other.
