Neurotransmitters - substance that is released when the axon terminal of a presynaptic neuron is excited. The substance then travels across the synapse to act on the target cell to either inhibit or excite it. Disorders in the brain physiology of neurotransmitters have been implicated in the pathogenesis of a variety of psychiatric illnesses. Norephinephrine and epinephrine are the two active hormones that cause some of the physiological expressions of fear and anxiety and have been found to be in excess in some anxiety disorders when a disturbance in their metabolism occurs. Oxytocin - Oxytocin is a pituitary hormone that stimulates muscle contraction and sensitizes nerves.
Dopamine stimulates the production of oxytocin.
Fewer oxytocin receptors create less attachment in relationships. Phenylethalimine - chemical which plays a critical role in the limbic system known to give a feeling of bliss. It is a natural ingredient in chocolate. Receptor - the terminal structure of a neuron, specialized to receive stimuli and transmit them to the spinal cord and brain. Sensory Deprevation - Serotonin system is effected through means of fasting and other related activities.