2. Transduction(换能) a process by which an environmental stimulus becomes encoded as a sequence of nerve impulses in an afferent nerve fiber Transduce sensory energy into neural(bioelectrical) energy Receptor potentials: Changes in the transmembrane potential of a receptor caused by the stimulus Generator Potential: A receptor potential that is strong enough(reaches threshold)to generate an action potential The stronger the sitmulus(above threshold ) the more APs are fired over a given time period translated by the cns as a strong sensation2. Transduction (换能) – A process by which an environmental stimulus becomes encoded as a sequence of nerve impulses in an afferent nerve fiber • Transduce sensory energy into neural (bioelectrical) energy – Receptor potentials: Changes in the transmembrane potential of a receptor caused by the stimulus. – Generator Potential: A receptor potential that is strong enough (reaches threshold) to generate an action potential • The stronger the sitmulus (above threshold) the more APs are fired over a given time period; • translated by the CNS as a strong sensation