Using+one+or+more+examples,+explain+effects+of+neurotransmission+on+human+behaviour+(for+example,+the+effect+of+noradrenaline+on+depression).

__**What are neurotransmitters?**__

Neurotransmitters are the body's natural chemical messengers that transmit information from one neuron to another. It is stored at the terminal button. First, an electrical impulse travels down the axon and signals to release the neurotransmitter which crosses the synapse. After crossing the synapse, the neurotransmitter fits into receptor sites on the post-synaptic membrane. Once the message is passed on, they are either broken down or reabsorbed by terminal button (reuptake). Neurotransmitters play a big role in human behvaiour, they can affect your mood, memory and be cause of mental illnesses. Different neurotransmitters have different roles.

__**Serotonin- (Kasamatsu and Hirari, 1999)**__
 * Aim**: to figure out the effect of sensory deprivation on the brain


 * Method**: Buddhist monks went on a 72-hour pilgrimage. They didn't eat or drink or communicate and were exposed to the cold. Researchers took blood samples before and after the experiment.


 * Result**: Through the comparison of blood samples taken from monk before and after pilgrimage, they discovered serotonin level increased and that sensory deprivation instigated the activation of serotonin that caused the hallucinations and sleepiness.

__**Acetylcholine- (Martinez and Kesner, 1991)**__
 * Aim**: to determine the roles of neurotransmitter, acetylcholine, on memory


 * Method**: Rats were trained to go through a maze and get to the end where they received food. Once they learned how to do this, researchers injected a group of rats with scopolamine (blocks acetylcholine receptors). THen injected another group with physostigmine (blocks production of cholinesterase- stops the 'clean-up'). Third group was not given any injections.

Group 1-injected with scopolamine, which decrease the amount of acetylcholine Group 2- injected with a chemical that has cleansing effect of acetylcholine and enable the brain to return to its original state Group 3- nothing Group 1 was slower at finding the maze, group 2 was the fastest, group 3 made fewer mistake than group 1 =>Acetylcholine plays important role in memory storage
 * Result**:

Jenna on neurotransmission media type="custom" key="11346754"