Place units in the hippocampus of the freely moving rat.
D000818:Animals; D004327:Drinking Behavior / Q000502:physiology; D005247:Feeding Behavior / Q000502:physiology; D006624:Hippocampus / Q000166:cytology / Q000502:physiology*; D006801:Humans; D009043:Motor Activity / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D009949:Orientation / Q000502:physiology*; D051381:Rats; D012903:Smell / Q000502:physiology; D013826:Theta Rhythm; D014796:Visual Perception / Q000502:physiology