Conclusion

what is the relationship between wavelength and frequency?

.

Frequency and wavelength are inversely related.

Explanation:

In accordance with the formula for calculating wavelength, wavelength = velocity/frequency you can see that the more frenquent a wave is, the shorther the wave. This can be seen in the electromagnetic spectrum, where, for example, Gamma Rays are more frequent (therefore more powerful) but are really short in (wave)length. Hopefully this helps clear things up!

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."