Given her deafness, the auditory part of the brain, deprived of its usual input, had started to generate a spontaneous activity of its own, and this took the form of musical hallucinations, mostly musical memories from her earlier life. The brain needed to stay incessantly active, and if it was not getting its usual stimulation..., it would create its own stimulation in the form of hallucinations.
Oliver SacksPeople will make a life in their own terms, whether they are deaf or colorblind or autistic or whatever. And their world will be quite as rich and interesting and full as our world.
Oliver SacksThe same areas which are active in listening to music are also active when you imagine music, and this includes the motor areas, too. That explains why earlier, even though I was only thinking of the mazurka, I was thinking in terms of movement.
Oliver SacksTo live on a day-to-day basis is insufficient; we need to transcend, transport, escape; we need meaning, understanding, and explanation; we need to see over-all patterns in our lives. We need hope, the sense of a future; the freedom to get beyond ourselves...in states of mind that allow us to rise above our immediate surroundings and see the beauty and value of the world we live in.
Oliver SacksThere is certainly a universal and unconscious propensity to impose a rhythm even when one hears a series of identical sounds at constant intervals... We tend to hear the sound of a digital clock, for example, as "tick-tock, tick-tock" - even though it is actually "tick tick, tick tick.
Oliver Sacks