Give two examples of each
The neurotransmitters then bind with special "postsynaptic receptors" in the dendrites of the receiving neuron. When a postsynaptic receptor receives a neurotransmitter it can either cause a nerve impulse to travel down the neuron or it can inhibit a nerve impulse depending on the neurotransmitter released. Dopamine Neurotransmitter is associated with motor movement and alertness. Lack of Dopamine is associated with Parkinson's disease; and overabundance is associated with schizophrenia. Serotonin Neurotransmitter associated with mood control. Lack of serotonin is associated with clinical depression.
Endorphins neurotransmitter associated with pain control, also involved in drug addictions.
Sensory information impacts upon the register of sensory memory, where memory traces are held briefly and before decaying. If we attend to the information, much of it is transferred to (STM). Information in STM may decay or be displaced if it is not transferred to long-term memory LTM. We can use rehearsal or elaborative strategies to transfer memories to LTM.
If information is organized poorly, or if we cannot find cue to retrieve it, it may be lost. In LTM Capacity: Virtually unlimited ,Duration: Up to a lifetime ,Processing: Information is organized according to meaning and is associatively linked Capacity is unlimited in the sense that nobody seems to run out of the capacity to store new information, even if they live beyond 100 years. If they did, then either they would stop learning entirely or new learning could only take place by first erasing something already stored in LTM. This does not appear to happen -- when storage/retrieval capability is lost it is due to deterioration of brain systems rather than to systems exceeding their holding capacity.
In STM Capacity: About 7 plus or minus 2 "chunks" of information Duration: About 18 to 20 seconds Processing: To hold information in STM, it is often encoded verbally, although other strategies may also be used such as visualization. These strategies make it possible to "rehearse" the information. The low capacity of STM was first noted by George Miller in a famous paper intitled The Magical Number Seven, Plus or Minus Two. Miller concluded that about seven (plus or minus two) "chunks" of information could reside in STM simultaneously. Miller defined a "chunk" as an independent item of information -- one whose recall did not aid in the further recall of the other items.
Random letters such as "GJK" would each be considered a chunk, but letters that form a recognizable larger whole, such as "CAR" would not. (In this case the word "car" is a single chunk.)
Describe paranoid schizophrenia.
A major problem with this schedule is that people tend to improve their performance right before the time period expires so as to "look good" when the review comes around. Variable Ratio-This refers to applying a reinforcer after a variable number of responses. Variable ratio schedules have been found to work best under many circumstances and knowing an example will explain why. Imagine walking into a casino and heading for the slot machines.
After the third coin you put in, you get two back. Two more and you get three back. Another five coins and you receive two more back. How difficult is it to stop playing?
The kid learns to go to get up and go to the bathroom when he feels his bladder get full. Later he will go to the bathroom when he feels the fullness of his bladder. He doesn't need bell to wake him up."alarm": is the unconditioned stimulus that produces the unconditioned response of waking up.
The sensation of a full bladder is the conditioned stimulus that, before conditioning, did not produce wakefulness. After several pairings of the full bladder (CS) and the alarm (UCS), the child is able to awaken to the sensation of a full bladder without the help of the alarm.
The smell receptors in our noses are stimulated by different compounds and molecules in the air. Our taste buds are stimulated by different chemicals present in whatever we put in our mouth.
The thalamus is an area of the brain where pain and other sensory information is interpreted and recognized. Te hypothalamus regulate bodily temperature, certain metabolic processes, and other autonomic activities. The amygdale is associated with sense of smell. The hippocampus is responsible for our ability to store and retrieve memories.
ADHD, certain types of dementias, neuropsychiatric disturbances are types of disorders associated with limbic dis-control.
Defense mechanisms are used by the ego to protect the conscious mind. One mechanism is Repression- blocking thoughts out for conscious awareness. Denial-Not accepting the ego-threatening truth. Displacement- redirection one's feelings towards another person or object.