In our vast neural network, not all neurotransmitters are the party-starters, making things happen! Some are like the cool, calm DJs, putting a break on the action. Let's dive in!

• Neurotransmitters? They're like messengers of the nerve world.
• Some neurotransmitters don't stimulate action. Instead, they act like a bouncer at a club, keeping things calm and chill.

When certain neurotransmitters bind to a postsynaptic neuron, they cause hyperpolarization.

• Imagine this: You're trying to climb a hill (this is your action potential). Hyperpolarization is like the hill just got steeper! More challenging to climb, right?

GABA (γ-aminobutyric acid)? One of those chill DJs.

• When GABA binds, a chloride channel opens up, making the postsynaptic neuron even more chill.
• Real-world analogy: Think of GABA as turning down the volume at a party, making it a serene night by letting in the 'chill' chloride ions.