Negative reinforcement penalizes an individual for an undesired behavior.

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

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Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Ventilation of the mammalian lung by negative pressure filling.

Acromegaly in one individual from a pair of identical twins.

Unique markings identify individual humpback whales.

Neural Circuitry in Defensive Behavior and Predation

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Brain metabolism in a schizophrenic individual (left) and a normal individual (right). These scans o

Author Question: Negative reinforcement penalizes an individual for an undesired behavior. (Read 714 times)

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