Introduction, Martin and Gusella; molecular basis of mental retardation - fragile X syndrome, Nelson; molecular genetics of Alzheimer's disease, Tanzi; Huntingdon's disease and other trinucleotide repeat disorders, Young; genetics of human epilepsy, McNamara; molecular genetics of brain tumors, Israel; molecular approaches to therapy of stroke, Sharp and Massa; molecular basis of HIV associated neurological disease, Edwards; the parthogenesis of Parkinson's disease, Pusiner; amyotrophic lateral sclerosis, Brown; molecular genetics of peripheral neuropathies, Lupski; ion channel defects in the hereditary myotonias and periodic paralyses, Cannon; genetic mitochondrial disorders, Johns; epilogue, Martin.