It seems that the brain always has to be active, and if the auditory parts of the brain are not getting sufficient input, then they may start to create hallucinatory sounds on their own. Although it is curious that they do not usually create noises or voices; they create music.
Oliver SacksI am a man of vehement disposition, with violent enthusiasms, and extreme immoderation in all my passions.
Oliver SacksFor 'wellness', naturally, is no cause for complaint - people relish it, they enjoy it, they are at the furthest pole from complaint. People complain of feeling ill - not well ... Thus, though a patient will scarcely complain of being 'very well', they may become suspicious if they feel 'too well'.
Oliver SacksThe brain is more than an assemblage of autonomous modules, each crucial for a specific mental function. Every one of these functionally specialized areas must interact with dozens or hundreds of others, their total integration creating something like a vastly complicated orchestra with thousands of instruments, an orchestra that conducts itself, with an ever-changing score and repertoire.
Oliver Sacks