Alzheimer's disease is the most common cause of dementia, affecting around 496,000 people in the UK. Dementia is a brain diseases that cause long term loss of the ability to think, mood changes and reason clearly that is severe enough to affect a person's daily functioning. These symptoms occur when the brain is damaged by certain diseases and conditions, including Alzheimer's disease. Alzheimer's disease, first described by the German neurologist Alois Alzheimer, is a physical disease affecting the brain. During the course of the disease, protein 'plaques' and 'tangles' develop in the structure of the brain, leading to the death of brain cells. People with Alzheimer's also have a shortage of some important chemicals in their brain.

Alien hand syndrome, (AHS) is a rare neurological disorder that causes hand movement without the person being aware of what is happening or having control over the action. The afflicted person may sometimes reach for objects and manipulate them without wanting to do so, even to the point of having to use the healthy hand to restrain the alien hand. Patient suffering from AHS feels that one's hand is possessed by a force outside of ones control and feels sensation in the affected hand but thinks that the hand is not part of their body and that they have no control over its movement, that it belongs to an alien. Hence, syndrome is name as Alien hand syndrome.

Imitinef Mercilet or Imatinib is a drug used treat certain types of cancer. Imatinib works by overcrowding an abnormal enzyme feature of the disease. Imatinib is the first accepted drug to directly turn off the signal of a protein well-known to cause a cancer. Imatinib is swiftly engrossed when given by mouth, as well as is highly bioavailable, 98% of an oral dose reach the bloodstream. Metabolism of imatinib occur in the liver .Though the long-term side effects of imatinib contain not yet been ascertain, research suggests that it is usually very in good health tolerated.

Nerve impulses to and from the brain travel as fast as 170 miles per hour.

Ever wonder how you can react so fast to things around you or why that stubbed toe hurts right away? It’s due to the super-speedy movement of nerve impulses from your brain to the rest of your body and vice versa, bringing reactions at the speed of a high powered luxury sports car.

LSD(Lysergic acid diethylamide) is the most potent & strongest hallucinogen ever known to man. small Quantity of LSD(25 microgram or 0.000025 g) is enough to cause hallucinations. LSD was first synthesized by Albert Hofmann in 1938 from ergotamine, a chemical derived by Arthur Stoll from ergot, agrain fungus that typically grows on rye. It was synthesized by researchers seeking to create new medicine & first developed in lab of switzerland. Hofmann discovered the psychedelic properties of LSD in 1943. It was introduced commercially in 1947 for various psychiatric uses, and it quickly became a therapeutic agent that appeared to show great promise. LSD is very potent, with 20–30 µg (micrograms) being the threshold dose.