A nursing instructor asks a student to explain the influence of chronobiology on depression. Which of the following would the student include when responding?
A) The exact location of genes leads to identifying the gene responsible for causing depression.
B) A break in the corpus callosum blocks information exchange between the right and left hemispheres.
C) Damage to the posterior areas of the parietal lobe leads to altered discriminative sensory function.
D) Internal and external triggers can elicit biologic rhythm changes indicative of clinical depression.
Ans: D
Chronobiology involves the study and measure of time structures or biologic rhythms. Zeitgebers are specific events that function as time givers or synchronizers and that set biologic rhythms. Some theorists think that psychiatric disorders may result from one or more biologic rhythm dysfunctions. For example, depression may be, in part, a phase advance disorder, including early morning awakening and a decreased time of onset of REM sleep.
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