Lesion Studies

Lesion studies have shown that the effects between certain areas of the brain and physiological and psychological processes in the central nervous system that have been damaged or rendered inoperable due to some accidental injury or experiment and It is research on relationship. Thus, the lesion is an area of ​​brain tissue which has been damaged by an accident, disease or infection or is in a nonfunctional state by experimental testing. In life psychology, they are an important area of ​​research: they provide information about the loss of function of the brain area affected by the lesion, but this may be complicated for brain research reasons .

Lesion research - still one of the most important ways to detect the secret of the brain. Neuroscientists use this knowledge to find out which parts of the brain are involved in which functions, when human beings and animals suffer brain damage (very local damage) and lose a very special psychological function You can map your existence. PET (positron emission tomography) - the process of scanning radioactive glucose in the brain. More specifically, glucose releases (or releases) positrons (antimatter, mirror image equivalents of electrons), which disappear as soon as they encounter electrons and emit a bundle of gamma rays picked up by the detector.

That technology is wonderful. In other words, scientists have insisted on research on disease before image technology advances. Through injury, I intentionally destroy parts of the rodent's brain and see how those behaviors change. I can not ask a person to open my head with a drill bit and mess up for research. MRI scans are more detailed than CT scans. Instead of illuminating the brain with X-rays, MRI sends a strong magnetic field through the head. The nuclei from the hydrogen atoms are arranged at an appropriate angle to the magnetic field. The RF wave passes through the brain. When this happens, poor nuclei absorb energy from RF waves, so they bounce off at different angles. After the nucleus returns to its original position, energy is released and quantified by the detector.

Lesion studies confirmed gender differences in functional asymmetry in the marginal zone. In men, the correct vmPFC lesions seriously damage social and emotional functions and decision-making as well as in the case of famous Phineas gauges. Lesions on the left side are mild or no damage. In contrast, in women, the left vmPFC lesion causes severe social and emotional disturbances, but the right vmPFC lesion is relatively benign 56 The amygdala also has the same gender differences, Emotional defects not on the side of the lesion but on the left side, on the left side of the woman, not on the right side of the lesion.