Contributions of Rene Descartes (1596-1650)

Interested in Perception & the Nature of Thought

Developed Introspection as a Technique

A Nativist, even believed in innate ideas

Theories of Reflexes & Neurophysiology

- Model of nervous system
- Theory of Sleep & Dreaming
- Theory of Emotions
- Explained differences between animals & humans

Mind-Body Dualism