skull overlying the cerebellum. Electrode connections were made to a multipin Amphenol connector and the assembly was anchored to the skull with dental acrylic and anchor screws. EEG signals were recorded with a band pass of 0.5–70 Hz with a 60-Hz notch filter in. ERP trials were digitized at a rate of 256 Hz. Potential artifacts identified by computer software were excluded only after visual analysis of raw EEG. Only neurophysiological data recorded from the parietal cortex in animals treated with saline was included in the present study. The effects of intracerebroventricular administration of neurotensin on EEG and ERP were reported in a previous publication (Ehlers et al., 1999).
