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How is the hypothalamus involved in sleep? Cell clusters in the hypothalamus stimulate the production of relatively slow alpha waves, signaling the transition from deep relaxation to sleep. The hypothalamus triggers the pituitary gland in the endocrine system to produce the hormone thyroxin, which leads you to sleep. During sleep the hypothalamus stimulates the production of free radicals, molecules that are toxic to neurons, which weakens unused connections. In response to decreasing light the hypothalamus' suprachiastmatic nucleus causes the pineal gland to increase production of melatonin, leading you to sleep. The action of the hypothalamus suppresses immune cell production that fights off viral infections and cancer.

In response to decreasing light the hypothalamus' suprachiastmatic nucleus causes the pineal gland to increase production of melatonin, leading you to sleep. (True Answer )Correct

How did the definition of psychology change when behaviorism began to dominate the field? The focus on mental concepts began to reemerge. Incorrect The idea that unconscious forces shape our behavior became central. Psychologists began to concentrate on the development of the self. Psychology centered on direct observation of our actions. Advances in neuroscience directed psychologists to the study of brain activity.

Psychology centered on direct observation of our actions.

Until reading this question you were unaware that your shoes are pressing against your feet. This focusing of your conscious attention, or selective attention, illustrates that consciousness is easily understood and defined. conscious awareness is one part of the dual processing that occurs in our two-track minds. the definition of consciousness is constantly evolving. behaviorism explains many psychological phenomena. advances in neuroscience make it possible to relate brain activity to our mental states.

conscious awareness is one part of the dual processing that occurs in our two-track minds. (True Answer )Correct

The school of thought in psychology that systematically avoided the study of consciousness during the first half of the last century was psychoanalysis. behaviorism. functionalism. I structuralism. Gestalt psychology.

behaviorism.

Those who emphasize that mood fluctuations may be indicative of seasonal affective disorder are highlighting the importance of neuroadaptation. alpha waves. biological rhythms. narcolepsy. REM sleep.

biological rhythms. (True Answer )Correct

By 1960, the study of consciousness had been revived by psychologists' renewed interest in perception. emotion. socialization. mental processes. mental health.

mental process

Consciousness is the ability to solve problems, reason, and remember. the sudden and often novel realization of the solution to a problem. the process of organizing and interpreting sensory information. effortless encoding of incidental information into memory. our awareness of ourselves and our environment.

our awareness of ourselves and our environment. (True Answer )Correct