PSYCH 3A03 Lecture Notes - Psych, Basilar Membrane, Electrophysiology
5 Nov 2013
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Document Summary
Rate-level function measure the spiking (output) to anfs to a variable input stimulus level (spl) Sigmoidal function is typical for sensory neurons. Rate level function systematically varies across anfs with different rate of simultaneous activity (and thus neural threshold) We can use rate-level function to generate other functions, such as response area functions, within and between anfs. Response area functions used to measure or derive other features about. Anfs (e. g. cf: iso-level or isointensity curve (hold spl of signal constant, iso-rate curve (hold firing rate constant across frequency) Can make a whole family of such functions across frequency and spl above threshold. Based on characteristic frequency, peaks at cf. Threshold tuning curves display the spl of sound required to cause the neuron"s firing rate to go just above the cell"s spontaneous firing rate as a function of frequency. Different cells have different neural characteristic frequency (cf) or best excitatory frequency (bef)
