Briefly describe the role of the locus coeruleus in arousal and attention

What will be an ideal response?


The locus coeruleus is a small structure in the pons which is inactive at most times but emits bursts of impulses in response to meaningful events. Axons from the locus coeruleus release norepinephrine widely throughout the cortex, so this area has a huge influence. Anything that stimulates the locus coeruleus strengthens the storage of recent memories and increases wakefulness. The locus coeruleus is silent during sleep.

Psychology

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The thalamus does NOT receive information from:

A) sight. B) sound. C) smell. D) touch.

Psychology

Reduced response to one taste after exposure to another is referred to as ____.

A. adaptation B. cross-adaptation C. umami D. PTC

Psychology

Broca's area is located in the ______ lobe, while Wernicke's area is located in the ______ lobe.

A. left temporal; left frontal B. right temporal; right frontal C. left frontal; left temporal D. right frontal; right temporal

Psychology

A study of tax accountants' cholesterol levels around April 15th (tax day) in the 1950s found that

a. increasing stress has a definitive and identifiable unhealthy effect on a person's physiological functioning. b. cholesterol went up only in those accountants who ate in unhealthy manners during tax season. c. cholesterol actually dropped to dangerous levels in the accountants who worked more than 12 hours per day preparing clients' returns. d. There is no relationship between stress and cholesterol. Cholesterol is determined exclusively by what you eat.

Psychology