Final answer:
The synaptic modifications that would enhance postsynaptic neuron responses to glutamate release are triggering activation of kinases, insertion of AMPA receptors, and increasing conductance across AMPA receptors.
Step-by-step explanation:
The synaptic modifications that would likely enhance postsynaptic neuron responses to glutamate release are:
- Triggering persistent activation of kinases: Activation of kinases leads to phosphorylation of AMPA receptors, resulting in an increased conductance across AMPA receptors.
- Insertion of AMPA receptors: More AMPA receptors are inserted into the postsynaptic membrane, making the neuron more responsive to glutamate.
- Increasing conductance across AMPA receptors: This modification allows more ions to flow through AMPA receptors, enhancing the neuron's response to glutamate release.