Download Altered Egos How the Brain Creates the Self by Todd E. Feinberg PDF

By Todd E. Feinberg

It can be the private secret of philosophy, psychology, and neuroscience: how does the mind unite to create the self, the subjective "I"? In Altered Egos, Dr. Todd Feinberg provides a brand new idea of the self, according to his first-hand adventure as either a psychiatrist and neurologist.

Feinberg first introduces the reader to dozens of exciting situations of sufferers whose issues have led to what he calls "altered egos": a transformation within the mind that transforms the limits of the self. He describes sufferers who are suffering from "alien hand syndrome" the place one hand could assault the patient's personal throat, sufferers with frontal lobe harm who invent impressive tales approximately their lives, paralyzed sufferers who reject and disown one in all their limbs. Feinberg argues that the mind harm suffered through those humans has performed extra than just impair definite functions--it has fragmented their experience of self. After illustrating how those sufferers offer a window into the self and the brain, the writer provides a brand new version of the self that hyperlinks the workings of the mind with precise and private positive aspects of the brain, reminiscent of which means, function, and being. Drawing on his personal and different proof, Feinberg explains how the unified self, whereas no longer situated in a single or one other mind quarter, arises out of the fantastic complexity and variety of the brain's part components.

Lucid, insightful, packed with attention-grabbing case reviews and provocative new rules, Altered Egos grants to alter the best way we take into consideration human awareness and the production and upkeep of human id.

Show description

By Todd E. Feinberg

It can be the private secret of philosophy, psychology, and neuroscience: how does the mind unite to create the self, the subjective "I"? In Altered Egos, Dr. Todd Feinberg provides a brand new idea of the self, according to his first-hand adventure as either a psychiatrist and neurologist.

Feinberg first introduces the reader to dozens of exciting situations of sufferers whose issues have led to what he calls "altered egos": a transformation within the mind that transforms the limits of the self. He describes sufferers who are suffering from "alien hand syndrome" the place one hand could assault the patient's personal throat, sufferers with frontal lobe harm who invent impressive tales approximately their lives, paralyzed sufferers who reject and disown one in all their limbs. Feinberg argues that the mind harm suffered through those humans has performed extra than just impair definite functions--it has fragmented their experience of self. After illustrating how those sufferers offer a window into the self and the brain, the writer provides a brand new version of the self that hyperlinks the workings of the mind with precise and private positive aspects of the brain, reminiscent of which means, function, and being. Drawing on his personal and different proof, Feinberg explains how the unified self, whereas no longer situated in a single or one other mind quarter, arises out of the fantastic complexity and variety of the brain's part components.

Lucid, insightful, packed with attention-grabbing case reviews and provocative new rules, Altered Egos grants to alter the best way we take into consideration human awareness and the production and upkeep of human id.

Show description

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Extra resources for Altered Egos How the Brain Creates the Self

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The timing of myelination is so precise that the stage of human development can be determined simply by examining the extent of myelination. 1). Oligodendrocytes share a common ancestry with neurons, in that they originate from the same pool of neural stem cells. 1 Oligodendrocytes produce an insulating material called myelin around axons of the central nervous system. A single oligodendrocyte can myelinate many axons. Above is a scanning electron micrograph of an oligodendrocyte. begins shortly after neurogenesis when most of the neurons have taken their place in the developing nervous system.

Abnormal specification of the overall body plan, disruption of neural induction, improper specification of cell fate, or glitches during formation of the neural tube, can result in severe defects in nervous system development. ■ Learn more about the contents of this chapter Search the Internet for embryonic development, Hans Spemann, and cell fate. 3 Neurogenesis: Birth, Migration, and Differentiation of Neurons W ith successful closing of the neural tube, dramatic changes occur within its walls.

During the formation of the neuromuscular synapse, molecules released by the neuron start a cascade of events that lead to the firing of a 51 52 Brain Development nerve impulse by the target cell. Although the process of synapse formation in the brain appears to be more complex than in the peripheral nervous system, scientists think that it may follow a similar sequence of events as in the peripheral nervous system. Synapse formation is often accompanied by synapse refinement in which excess, unwanted, or inappropriate connections are eliminated.

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