A chemical required for synthesising acetylcholine, a neurotransmitter needed for memory storage and muscle control.

(Or "apoE").   Has been studied for many years for its involvement in cardiovascular diseases.   It has only recently been found that one allele (gene factor) of the aopE gene (E4) i [..]

 A drug or other molecule that blocks receptors. Antagonists inhibit the effects of agonists. 

A syndrome in which a person with a paralysed limb claims it is still functioning. One of Professor Ramachandran's patients, who had suffered a stroke which had paralysed the left side of her bod [..]

 Sex steroid hormones, including testosterone, found in higher levels in males than females. They are responsible for male sexual maturation.

A memory deficit that occurs resulting in brain damage.

 The most prevalent neurotransmitters in the brain, these include glutamate and aspartate, which have excitatory actions, and glycine and gamma-amino butyric acid (GABA) which have inhibitory actions. [..]

 An endocrine organ that secretes epinephrine and norepinephrine for the activation of the sympathetic nervous system. 

 A psychiatric disease relating to mood states. It is generally characterized by depression unrelated to events in the life of the patient, which alternates with periods of normal mood or with periods [..]

 An endocrine organ that secretes corticosteroids for metabolic functions: aldosterone for sodium retention in the kidneys, androgens for male sexual development, and estrogens for female sexual devel [..]