white matter

parts of the nervous system composed of nerve fibers that are enclosed in a myelin sheath, which gives a white coloration to otherwise grayish neural structures. The sheaths cover only the fibers, so regions containing mainly cell bodies are gray. Compare gray matter.

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Psychology term of the day

January 30th 2025

statistical stability

consistency of results across samples, study designs, and analyses. A meta-analysis may be used to examine the stability of means, correlations, and other parameter estimates obtained from different studies of the same population. See also stability coefficient.