Question

All of the following electrical changes of neurons are graded events except

• A. EPSPs
• B. IPSPs
• C. Action potentials
• D. Depolarizations caused by stimuli

Answer 1

Answer: (D)

Depolarizations caused by stimuli

When the nerve impulse reaches the end of the axon, there are some chemicals released from the neurotransmitters. They diffuse across the synaptic gap, which is the small space present between the axon and the receptors. Nerve impulses can be transmitted either by the electrical by the electric synapse or the chemical synapse.

So, the correct option is 'Depolarisations caused by stimuli'.