New York University states that the effects of a lack of oxygen to the brain depend on severity but include difficulty paying attention, poor judgement, poor coordination, intense emotions and drowsiness. In more severe ... More »

Elevation above sea level affects a person's oxygen levels, according to WebMD. This is because air at higher altitudes is less dense and therefore contains lower concentrations of oxygen. More » Health Conditions & Diseases

A small vessel disease such as leukoaraiosis leads to the blockage of blood to the brain, depriving the brain cells of the needed nutrients and oxygen, according to Life Extension. The effect of the blockage is dementia,... More »

According to Dartmouth, the cerebral cortex is the outer layer of the brain and is responsible for numerous functions including sensation, language, creativity, motor processes, memory, abstraction, emotion, attention an... More »

The frontal lobe controls emotions, problem solving skills, memory, language, social behavior, sexual behavior and overall judgement. It is the main portion of the brain that allows an individual to communicate and have ... More » Science Human Anatomy Nerves

Possible side effects associated with marijuana include dizziness, drowsiness and impaired judgement, according to Marijuana may alter the user's consciousness, and it often makes people feel uninhibited, rela... More » Health

According to Radient Pharmaceuticals, some of the common side effects patients may experience while taking Lexotanil 3 milligrams include fatigue, drowsiness, confusion, lack of alertness and lack of emotions. Muscle wea... More »