Fig. 7.

Effects of injection of copper sulfate into the stomach on the responses of LTF neurons to vestibular stimulation. A: changes in response vector orientation produced by administration of copper sulfate. Data are restricted to the subset of units for which a response vector orientation could be calculated before and after copper sulfate was provided. Open symbols designate values for neurons with gastrointestinal inputs, whereas filled symbols designate cardiovascular and unknown units. Horizontal lines show median values. B: Changes in response gain produced by delivery of copper sulfate. The absolute value of the percent change in gain following injection of the compound is indicated. Squares designate units whose response gain decreased after copper sulfate was infused, while circles indicate units whose response gain increased. C: bode plots comparing average response dynamics for neurons before and after copper sulfate administration. Error bars indicate means ± SE.