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AP Psychology Chp. 2
Quiz 2
| Words | Definitions |
|---|---|
| Statistical Significance | A statistical statement of how likely it is that an obtained result occurred by chance. |
| Hindsight Bias | The tendency to believe, after learning an outcome, that one would have foreseen it. (aka i knew it all along phenomenon) |
| Population | All the cause in the group, from which sample may be drawn for study. |
| Normal Curve | The symmetrical bell shaped curve that described the distribution of many physical and psychological attributes. Most scores fall near the average, and fewer and fewer scores lie near the extremes. |
| Neuron | a nerve cell; the basic building block of the nervous system. |
| Sensory Neurons | neurons that carrying incoming information from the sense reception to the central nervous system. |
| Interneurons | central nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs. |
| Dendrite | the bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body. |
| Axon | the extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscle or glands. |
| Myelin Sheath | a layer if fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from one node to the next. |
| Action Potential | a neural impulse; a brief electrical charge that travels down an axon. The action potential generated by the movement of positively charge atoms in and out of channels in the axon's membrane. |
| Threshold | the level of stimulation required to trigger a neural impulse |
| Synapse | the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron. |
| Neurotransmitter | A chemical substance that is released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse or junction, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure |
| Reuptake | the reabsorption by a neuron of a neurotransmitter following the transmission of a nerve impulse across a synapse |
| Endorphins | "morphine within" natural, opiate like neurotransmitter linked to pain control and to pleasure. |
| Nervous System | the body's speedy , electrochemical communication networks, consisting of all the nerve cells of the peripheral and central nervous system. |
| Central Nervous System | the brain and spinal cord. |
| Peripheral Nervous System | the sensory and motor neurons that connect the central nervous system to the rest of the body. |
| Parasympathetic Nervous System | the division of the autonomic nervous system that calms the body, conserving its energy. |
Created by:
janica.santiago
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