Examples of polarity in the following topics:
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Stages of the Action Potential
- The action potential is a rapid change in polarity that moves along the nerve fiber from neuron to neuron.
- As these positive ions rush in, the membrane of the stimulated cell reverses its polarity so that the outside of the membrane is negative relative to the inside.
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Body-Oriented Psychotherapies
- Light therapy (also known as phototherapy or heliotherapy) consists of exposure to daylight or to specific wavelengths of light using polychromatic polarized light, fluorescent lamps, or very bight, full-spectrum light.
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Neurotransmitters
- A neuron has a negative charge inside the cell membrane relative to the outside of the cell membrane; when stimulation occurs and the neuron reaches the threshold of excitement this polarity is reversed.
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Nature vs. Nurture
- Today, developmental psychologists rarely take such polarized positions (either/or) with regard to most aspects of development; instead, they investigate the relationship between innate and environmental influences (both/and).
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Explaining Mood Disorders
- Cyclothymia is considered to be a milder or subthreshold form of bipolar disorder, with the two polar states being dysthymia and hypomania (as opposed to depression and mania in bipolar disorder).
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Overview of Personality Assessment
- The MBTI measures individuals across four bi-polar dimensions:
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The Five-Factor Model
- Most people lie somewhere in between the two polar ends of each dimension.
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Mechanics of the Action Potential
- Additional sodium rushes in, and the membrane of the stimulated cell actually reverses its polarity so that the outside of the membrane is negative relative to the inside.