Vertebrates and invertebrates use very different strategies to increase conduction velocity of neurons. Saltatory conduction is metabolically more efficient than electrotonic conduction. Refer to the circuit diagram of the neuromuscular junction. We know that there are GABA A and GABA B receptors and that the mechanism for inhibition is different for each receptor.
Receptors are responsible for filtering, transduction, amplification, and activation.
Describe the phenomenon called range fractionation by sensory afferents. In your own words, explain range fractionation and note the significance of this phenomenon for the vertebrate nervous system. Describe the control of plasma membrane ion flow by cGMP in the rod cells of the retina. The place theory for frequency sorting explains how we are able to distinguish individual frequencies as a result of their actions at individual locations along the cochlea. Answer this in terms of what is happening at the level of the receptor and the afferent.