The following questions refer to the diagram below which represents the neurons in the aplysia siphon reflex circuit.  Which neuron in the aplysia siphon reflex circuit releases serotonin?

Which ion is responsible for the intracellular mechanisms that are necessary during a criticalperiod?

Habituation is a phenomenon in which ________ stimulation leads to a _________ response.

In which form of plasticity is this neural circuit involved, and which component of the circuit makes this form of plasticity possible?

Humans have critical periods for language.  This means that a child who doesn’t learn to speak in the first few years of life

Which condition(s) must be met to induce LTP?

As a general rule, the _______ the timescale of modulation, the more _______ the mechanism(s) that cause synaptic plasticity

The function of which synapse is altered during sensitization?

In the mammalian nervous system, visual critical periods…

Facilitation is a phenomenon in which _______ action potentials causes _______ in post-synaptic membrane potential.