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344 pages, Hardcover
First published August 28, 2018
The first principle is that each neuron is a discrete element that serves as the fundamental building block and signaling unit of the brain.
The second is that neurons interact with one another only at the synapses.
The third principle is that neurons form connections only with particular target neurons at particular sites. This connection specificity accounts for the astonishingly precise circuitry that underlies the complex tasks of perception, action, and thought.
The fourth principle ... is that information flows in one direction only - from the dendrites to the cell body to the axon, then along the axon to the synapse.
what happens to our sense of self when the brain does not function properly, when it is beset by trauma or disease?
"Pathologists were struck by the fact that most psychiatric disorders—namely, schizophrenia, depression, bipolar disorder, and anxiety states—did not produce visibly dead cells or holes in the brain. Since they did not see any obvious damage, they assumed that these disorders were either extracorporeal (disorders of mind rather than the body) or too subtle to detect.
Because psychiatric and addictive disorders did not produce obvious damage in the brain, they were considered to be behavioral in nature and thus essentially under the individual’s control—the moralistic, non-medical view that Pinel deplored. This view led psychiatrists to conclude that the social and functional determinants of mental disorders act on a different “level of the mind” than do the biological determinants of neurological disorders. The same was held to be true, at that time, of any deviation from the accepted norms of heterosexual attraction, feeling, and behavior.
Many psychiatrists considered the brain and mind to be separate entities, so psychiatrists and addiction researchers did not look for a connection between their patients’ emotional and behavioral difficulties and the dysfunction or variation of neural circuits in the brain. Thus, for decades psychiatrists had difficulty seeing how the study of electrical circuits could help them explain the complexity of human behavior and consciousness. In fact, it was customary as late as 1990 to classify psychiatric illnesses as either organic or functional, and some people still use this outdated terminology. Descartes’s mind-body dualism has proved hard to shake because it reflects the way we experience ourselves..."
Całe swoje życie zawodowe poświęciłem próbom zrozumienia wewnętrznych mechanizmów pracy mózgu oraz motywacji ludzkiego zachowania.