Electric shock areas of the brain pleasure

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By Will Knight. A lust for vengeance may be hardwired into the male brain. Scans of brain activity suggest that men experience greater satisfaction than women in seeing cheaters get their comeuppance — at least when the punishment is physical.

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Nsikan Akpan Nsikan Akpan. Julia Griffin Julia Griffin. This is how opioids brew a potent and deadly addiction in the brain.

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OBESE volunteers will get an electric shock when they think about binge-eating in a new medical trial. Electrodes are to be implanted in their brains so they can be zapped when they feel compelled to over-eat. Food-bingeing by the mice was reduced by 75 per cent.

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As a child, Kay Tye was immersed in a life of science. Today, Tye runs her own neuroscience lab at MIT. Under large black lights reminiscent of a fashion shoot, she and her team at the Picower Institute for Learning and Memory can observe how mice behave when particular brain circuits are turned on or off.

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By Helen Phillips. IT WAS an outlandish, ethically questionable experiment, but this was the s after all. The rats would work at complex tasks over and over for the promise of another shock.

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In the s, the psychologist B. Skinner devised the operant conditioning chamber, or "Skinner box," in which a lever press by an animal triggered either a reinforcing stimulus, such as delivery of food or water, or a punishing stimulus, such as a painful foot shock. Rats placed in a Skinner box will rapidly learn to press a lever for a food reward and to avoid pressing a lever that delivers the shock.

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For decades, psychologists have viewed the neurotransmitter dopamine as a double-edged sword: released in the brain as a reward to train us to seek out pleasurable experiences, but also a "drug" the constant pursuit of which leads to addiction. According to a new study from the University of California, Berkeley, that's only one face of dopamine. The flip side is that dopamine is also released in response to unpleasurable experiences, such as touching a hot tea kettle, presumably training the brain to avoid them in the future.

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Yet there it was in a publication from If you have direct access to the reward system and can turn the feeling of euphoria up or down, who decides what the level should be? The doctors or the person whose brain is on the line? The authors were asking this question because of a patient who wanted to decide the matter for himself: a year-old German man who had been suffering for many years from severe OCD and generalized anxiety syndrome.

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You've read 1 of 2 free monthly articles. Learn More. Yet there it was in a publication from

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Electrical brain stimulation EBSalso referred to as focal brain stimulation FBSis a form of electrotherapy and technique used in research and clinical neurobiology to stimulate a neuron or neural network in the brain through the direct or indirect excitation of its cell membrane by using an electric current. It is used for research or for therapeutic purposes. Electrical brain stimulation was first used in the first half of the 19th century by pioneering researchers such as Luigi Rolando [ citation needed ] — and Pierre Flourens [ citation needed ] —to study the brain localization of functionfollowing the discovery by Italian physician Luigi Galvani — that nerves and muscles were electrically excitable. The stimulation of the surface of the cerebral cortex by using brain stimulation was used to investigate the motor cortex in animals by researchers such as Eduard Hitzig —Gustav Fritsch —David Ferrier — and Friedrich Goltz —

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