Glutamate is an excitatory relative of GABA. It is the most common neurotransmitter in the central nervous system-as much as half of all neurons in the brain-and is especially important in regards to memory.Curiously, glutamate is actually toxic to neurons, and an excess will kill them.t is an inhibitory neurotransmitter, meaning that when it finds its way to its receptor sites, it blocks the tendency of that neuron to fire. Dopamine is strongly associated with reward mechanisms in the brain. Drugs like cocaine, opium, heroin, and alcohol increase the levels of dopamine, as does nicotine.
Causes of Muscle weakness. Muscle weakness may be caused by a variety of diseases and conditions, including low sodium or potassium, amyotrophic lateral sclerosis, cerebral palsy, multiple sclerosis, pinched nerve, muscular dystrophy and poisoning.uscle weakness may be caused by a variety of diseases and conditions, including low sodium or potassium, amyotrophic lateral sclerosis, cerebral palsy, multiple sclerosis, pinched nerve, muscular dystrophy and poisoning.
many causes of weakness feeling tired fatigue and measurable muscle weakness symptoms weakness feeling tired or general fatigue marked by reduced strength in your muscles can have many causes a cause for weakness can have you feel weak all over or only in one area limb and single muscle your loss can be measurable or without any calculable strength loss if weakness is your only noticeable symptom and you are trying to figure out its cause this quest of self diagnosis is not often an easy task some symptom instigators of fatigue are enumerated to give you a sense of the challenge