Please read the passage and answer the questions that follow:

Mohan is a 16 years old boy studying in high school. He usually gets anxious in normal circumstances. He has bouts of anxiety attacks when his teachers give him any assignments. In normal times too, he shows symptoms like restlessness sleeplessness, loss of appetite, frequent urination rapid heart rate etc. He has unpleasant feelings of fear and apprehensions. After such observations his family members brought him to a psychologist for consultation. The psychologist took detailed information about his psychological attributes, history in the context of his physical & psycho-social environment and interviews with his parents. The parents recalled that their child has become anxious & fearful and is unable to relax. Gradually Mohan is isolating himself from all his near and dear ones.

The disorder Mohan is suffering from is associated with the low activity of the neurotransmitter _________.

GABA (Gamma aminobutyric acid)

Anxiety disorders have been linked to low activity of the neurotransmitter gamma aminobutyric acid (GABA).

Schizophrenia is caused due to excess activity of dopamine, and depression due to low activity of serotonin.