Answer:
portraying objects in the natural world as they really appear
Are talking about on a piano?
Answer:
Yes, the black lines that are tilted on the staff do tell you how many times you Strum.
Neurons communicate with each other via electrical events called 'action potentials' and chemical neurotransmitters. At the junction between two neurons (synapse), an action potential causes neuron A to release a chemical neurotransmitter.