- Input systems (Sensory Systems)
- Integrators (Central Nervous System)
- Output systems/Effectors (Muscles)


University of Michigan - Ann Arbor

How hormones affect behavior

Nelson, R. J. (2010). Hormones and behavior: Basic concepts. Encyclopedia of Animal Behavior, 97–105. https://doi.org/10.1016/b978-0-08-045337-8.00236-9 

Hormones and behavior: Basic concepts

Behavioral systems influenced by hormones

- the behavior should cease when the hormone is removed or blocked
- once the behavior stops, it should occur again with the return of the hormone
- if there is a low concentration of the hormone, less of that behavior is observed; if there is a high concentration, then there is more of that behavior observed

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