side view of a brain, drawing. brain degenerative diseases

side view brain elderly man neurons synapses communication cerebral stimulus neural network circuit degenerative diseases parkinson alzheimer old age nerve cells neurology urges impulses cancer alpha-synuclein amnesia assistance attention clinic cure decline cit degeneration dopamine exams slowness disease memory hospital protein research memories essentially black tremor care study analyze cause solution problems speech language cognition light drawing alzheimer's philosophy: connections development thought reflection infinite possibilities mind human anatomy digital reality artificial consciousness rendering