If an epileptic seizure is focused in a particular sweet spot in the temporal lobe, a person wonยดt have motor seizures, but instead something more subtle. The effect is something like a cognitive seizure, marked by changes of personality, hyperreligiosity (an obsession with religion and feelings of religious certainity), hypergraphia (extensive writing on a subject, usually about religion), the false sense of an external presence, and, often, the hearing voices that are attributed to a god. Some fraction of historyยดs prophets, martyrs, and leaders appear to have had temporal lobe epilepsy.
David EaglemanAwareness of your surroundings occurs only when sensory inputs violate expectations. When the world is successfully predicted away, awareness is not needed because the brain is doing its job well.
David EaglemanNothing is inherently tasty or repulsive - it depends on your needs. Deliciousness is simply an index of usefulness.
David EaglemanEverything that creates itself upon the backs of smaller scales will by those same scales be consumed.
David EaglemanBecause vision appears so effortless, we are like fish challenged to understand water.
David EaglemanWe are made up of an entire parliament of pieces and parts and subsystems. Beyond a collection of local expert systems, we are collections of overlapping, ceaselessly reinvented mechanism, a group of competing factions. The conscious mind fabricates stories to explain the sometimes inexplicable dynamics of the subsystem inside brain. It can be disquieting to consider the extent to which all of our actions are driven by hardwired systems doing what they do best while we overlay stories about choices.
David EaglemanIf you cannot always elicit a straight answer from the unconscious brain, how can you access its knowledge? Sometimes the trick is merely to probe what your gut is telling you. So the next time a friend laments that she cannot decide between two options, tell her the easiest way to solve her problem: flip a coin. She should specify which option belongs to heads and which to tails, and then let the coin fly. The important part is to assess her gut feeling after the coin lands. If she feels a subtle sense of relief at being "told" what to do by the coin, that's the right choice for her.
David Eagleman