BIOL 306 Lecture Notes - Lecture 18: Squid Giant Axon, Escape Response, Loligo
10 Jan 2019
School
Department
Course
Professor
Document Summary
Single neurons or the pair of neurons that command specific pattern of behaviour in response to. Situation where complex information is encoded by a single neuron and the activity is: must be necessary and sufficient to create a behaviour. Can be a command system instead of a true command neuron. Usually talk about escapes responses: need it to be fast or they become prey. Stimulus comes into the sense organ, which projects to neurons which take a decision (ex: command neurons) and create an escape response. Therefore: early and reliable detection of predator and no false alarms, fast response, we need fast and reliable neural circuits, we need neurons with very high conduction speeds: giant neurons, studying information flow. Famous systems: crayfish tail flip, mauthner neurons, cockroach cercal system, squid ga. The most famous are the squid giant axon in loligo. Theory behind gas: how to speed up action potential conduction:
