Appendix C
Brain Response of Behavior
Part I
Note: Parts II and III follow below, complete all three.
Run Multimedias 2.3 and 2.4
* Go to the Web site www.prenhall.com/morris. * Click text: Psychology: An Introduction (12th ed.) * Click “2” on the select a chapter tool bar. * Click Live!Psych on the left hand menu. * Select 2.3 and 2.4.
Write a 350- to 700-word response to the following: Explain the communication process of neurons in the brain. List some common neurotransmitters and describe their effect on behavior.
<Insert Response Here>
The communication process of neurons in the brain occurs through an electrochemical process. Neurons pass neurotransmitters through the dendrites, which are attached to the ends of each neuron and receive messages from neighboring neurons. The chemical messages that are passed from one neuron to the next cause an action potential. This occurs when the receiving neuron accepts the right amount of the correct message. Once the message is received, the neuron will then send neurotransmitters to the next neuron through the axon. After the neurotransmitters pass through the axon they are released through the terminal buttons. Then, the nerve impulses pass to a nerve cell at a site called the synapse. At this site, the impulse is transmitted to the other cell. The neurotransmitters must pass through a gap between the cells. This gap is called the synaptic cleft. Through this gap, the neurotransmitters are allowed to flow out of the terminal buttons of one neuron. After the neurotransmitters are released, they pass through the synaptic cleft and are received by the dendrites of the next neuron. The neuron that sends the neurotransmitters is called the presynaptic neuron, whereas the receiving neuron is called the postsynaptic neuron. The terminal buttons of the presynaptic neuron hold the synaptic vesicles. These sacs filled with neurotransmitters pass