G for all four cases, describe in words, what you observed regarding the density of and sign of the charges of the sphere being probed with the proof plane. Explain what you would expect to see, and if your data match your expectations

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."