The first lesson about trusting your senses is: don't. Just because you believe something to be true, just because you know it's true, that doesn't mean it is true.
David EaglemanThe conscious mind is not at the center of the action in the brain; instead, it is far out on a distant edge, hearing but whispers of the activity.
David EaglemanGiven the billions of neurons, this means there are as many connections in a single cubic centimeter of brain tissue as there are stars in the Milky Way galaxy.
David EaglemanNeuroscience over the next 50 years is going to introduce things that are mind-blowing.
David EaglemanBecause vision appears so effortless, we are like fish challenged to understand water.
David EaglemanPeople wouldn't even go into science unless there was something much bigger to be discovered, something that is transcendent.
David EaglemanWe are not at the center of ourselves, but instead - like the Earth in the Milky Way, and the Milky Way in the universe - far out on a distant edge, hearing little of what is transpiring.
David EaglemanDeath... The moment, sometime in the future, when your name is spoken for the last time.
David EaglemanThe brain "fills in" the missing information from the blind spot. Notice what you see in the location of the dot when it's in your blind spot. When the dot disappears, you do not perceive a hole of whiteness or blackness in its place; instead your brain invents a patch of the background pattern. Your brain, with no information from that particular spot in visual space, fills in with the patterns around it. You're not perceiving what's out there. You're perceiving whatever your brain tells you.
David EaglemanWhen people fall in love, thereยดs period of up to three years during which the zeal and infatuation ride at a peak. The internal signals in the body and breain are literally a love drug. And then it beginds to decline. From this perspective, we are preprogramed to lose interest in a sexual partner after the time required to raise a child has passed - which is, on average, about 4 years.
David EaglemanOne of the most pervasive mistakes is to believe that our visual system gives a faithful representation of what is "out there" in the same way that a movie camera would.
David EaglemanBrains are like representative democracies. They are built of multiple, overlapping experts who weigh in and compete over different choices.
David EaglemanEvery atom in your body is the same quark in different places at the same moment in time.
David EaglemanIt turns out that dopamine is a chemical on double duty in the brain. Along with its role in motor commands, it also serves as the main messenger in the reward systems, guiding a person toward food, drink, mates, and all things useful for survival. Because of its role in the reward system, imbalances in dopamine can trigger gambling, overeating, and drug addiction - behaviors that result from a reward system gone awry.
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 EaglemanThe majority of human beings live their whole lives unaware that they are only seeing a limited cone of vision at any moment.
David EaglemanEverybody knows the power of deadlines - and we all hate them. But their effectiveness is undeniable.
David EaglemanWhen a male vole repeatedly mates with a female, a hormone called vasopressin is released in his brain. The vasopressin binds to receptors in a part of the brain called the nucleus accumbens, and the binding mediates a pleasurable feeling that becomes associated with that female. This locks in the monogamy, which is known as pair-bonding. If you block this hormone, the pair-bonding goes away.
David EaglemanAsleep vision (dreaming) is perception that is not tied down to anything in the real world; waking perception is something like dreaming with a little more commitment to what's in front of you.
David EaglemanInterestingly, schizophrenics can tickle themselves because of a problem with their timing that does not allow their motor actions and resulting sensations to be correctly sequenced.
David EaglemanYour brain is built of cells called neurons and glia - hundreds of billions of them. Each one of these cells is as complicated as a city.
David EaglemanThe three-pound organ in your skull - with its pink consistency of Jell-o - is an alien kind of computational material. It is composed of miniaturized, self-configuring parts, and it vastly outstrips anything we've dreamt of building.
David EaglemanWe open our eyes and we think we're seeing the whole world out there. But what has become clearโand really just in the last few centuriesโis that when you look at the electro-magnetic spectrum we are seeing less than 1/10 Billionth of the information that's riding on there. So we call that visible light. But everything else passing through our bodies is completely invisible to us. Even though we accept the reality that's presented to us, we're really only seeing a little window of what's happening.
David EaglemanSome men may be genetically inclined to have and hold a single partner, while some may not. In the near future, young women who stay current with the scientific literature may demand genetic tests of their boyfriends to assess how likely they are to make faithful husbands.
David EaglemanWe believe we're seeing the world just fine until it's called to our attention that we're not.
David EaglemanEvery week I get letters from people worldwide who feel that the possibilian point of view represents their understanding better than either religion or neo-atheism.
David EaglemanWe're trapped on this very thin slice of perception ... But even at that slice of reality that we call home, we're not seeing most of what's going on.
David EaglemanIn my view, the argument from parsimony is really no argument at all - it typically functions only to shut down more interesting discussion. If history is any guide, it's never a good idea to assume that a scienti๏ฌc problem is cornered.
David Eagleman