How are impulses generated in the brain?

Answer 1

A need for a particular part of the body is sensed by the somatic nervous system. The need is processed in the cerebral cortex and an action potential is sent across a nerve until it reaches the synapse and activates or stimulates the muscle or gland, causing a reaction.

Answer 2

An information is carried through a series of electrical impulses that travel from one neouron to another. These are called nerve impulses. These impulses are sent to the specific areas of the brain where sensations take place. The axons or nerve fibres do not carry sensations like pain or cold. These sensations occur only when the information reaches the brain.

Yoga is an ancient Hindu system of philosophy and I spiritual practice. In broad terms, it aims at deliverance from suffering and pain through meditation to effect a reunion with the Universal Spirit. In more specific terms, it includes the practice of various postures - static and moving, breathing exercises, a disciplined diet, and meditation - all of which tone up the body, mind, and spirit. Yoga is, therefore, not a system of medicine; it is more a discipline - a means to the end, which is samadhi, a state of union with God.

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Answer 3

A rotational acceleration impulse to a head, as occurs at traffic accidents, sport injuries, assaults and falls, induces a diffuse brain damage that eventually could result in persistent neuropsychiatric deficits and neurodegeneration. Emphasis has been concentrated on the relative motion of the brain inside the skull during head impact, whereas less attention has been paid to whether intracranial pressure changes are generated and, if so, the implications thereof. In the present experimental study we investigated in an animal model system, based on rabbits, if a sagittal, anterior-posterior rotational acceleration of a head generated intracranial pressure changes, recorded by fibre optic pressure sensors, inserted ipsilaterally in the parieto-temporal and the occipital lobes. Two levels of rotational acceleration were used in the experiments; one higher, corresponding to the threshold limit for moderate diffuse brain injury, and one lower, close to being noninjurious. Several pressure recordings were performed in each rabbit at the two acceleration levels. The pressure recordings invariably revealed the same general characteristics of rapid, positive and negative pressures within the brain, with variations in amplitude and duration, lasting for up to 10 ms. A major finding was the generation of powerful negative pressures, as low as 0.3 bars in absolute pressure. The most prominent difference in amplitudes of the negative peak pressures between the two applied acceleration levels was demonstrated at the parieto-temporal location. The presented pressure recordings are the first to disclose the generation of transient, powerful intracerebral pressures at rotational acceleration of the head, which must be considered in studies of brain injury generation and distribution as well as prevention.

Answer 4

brains do have neurons which has the fluid , which is charged with ions, when this gets triggered , then surely there is an impulse , it is quiet an involuntry process.

Answer 5

Electro-chemically.