The Internal Environment and Appetitive Measures of Taste Function in the Rat
It is the fact that animals are responsive to certain patterns of external environmental stimuli only when specific states of the internal environment prevail that specify certain basic biological motivated behaviors. On the biological side. we specify as a necessary condition the state of the internal environment, for example, in terms of peripheral changes such as the level of sex hormones or the condition of dehydration or salt depletion. In many of these cases, we have learned that these internal environment changes lead to changes in brain states which, in turn, yield the motivated behavior.
KeywordsSucrose Depression Angiotensin Dehydration Hyperglycemia
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