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The effects of subfornical organ (SFO) lesions on salt and water intakes after sodium depletion were studied. Water and salt intakes were measured over 45 hr during a regimen that combined furosemide diuresis and access to low-sodium diet. Water was solely available for 23 hr after diuresis, and water and 0.3 M NaCl solution were available in choice for the next 22 hr. After diuresis, rats with SFO lesions drank significantly less water in 2 hr than controls but achieved equivalent water and sodium balances before salt access 20 hr later. After salt access, rats with SFO lesions drank significantly less saline and water in 2 hr than controls but had similar saline and water intakes over the next 20 hr. Thus, SFO lesions blunted acutely, but not chronically, saline and water intakes to sodium depletion, and the blunted intakes are not explainable by hydrational status.
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J B Simpson
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R L Thunhorst, and
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Behavioral neuroscience,
R L Thunhorst, and
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Neuropharmacology,
R L Thunhorst, and
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Nature neuroscience,
R L Thunhorst, and
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Nature neuroscience,
R L Thunhorst, and
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Brain research,
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R L Thunhorst, and
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Brain research,
R L Thunhorst, and
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Die Naturwissenschaften,
