* **Detection** of sense requires **receptors**, specialized for that stimulus modality
* A protein that whatever the stimulus is can react
* Ex: hair cells moving can detect wind
* Stimulus must be **transduced** (changed) into the language that the neurons can speak
* Neurons speak through action potential
* The “language” of sensory input is in the form of chemicals, sound waves, temperature, etc.
* The “language” of neurons includes action potentials, depolarization, hyperpolarization
* The concept of **labeled lines(what she drew)** says that the brain recognizes distinct senses because action potentials travel along separate nerve tracts.
* When information gets to the brain it will based on method of **coding**
* Coding is done in the cerebral cortex!!!!