Sensory systems

Sensory systems - Sensory system Stimuli: 1.) Receptors a....

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Sensory system Stimuli: 1.) Receptors a. Chemo receptors: olfactory receptors , g protein coupled recetpros, taste, b. Electromagnetic: vision c. Thermal and pain: discovered by david julius. Discovered that …why spicy foods are hot? Chili pepper stimulate thermal receptors.discovered by taking active ingredient capsacin, added it to express genes. Found ion channel activiated by capsacin. We have same family of ion channels, but different. Some are stimulated at cold, warm or hot. Capsacin are activated by hot ion channels. d. What about when people experience internal pain? Many drugs are addictive. So need more efficient way than drugging brain. Drugging senros is better. 2.) How does the generator potential work? What sets off sensory system? a. At rest, no potential, so it’s at 70 mV. So for ex, if you add capsaicin. What determines if signal is strong or weaker? How does generator tell neuron if this is strong stimulus or weak stimulus. Frequency!. How do you moderate stimulus?
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Sensory systems - Sensory system Stimuli: 1.) Receptors a....

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