Answer with Explanation:
The human emotion helps us in making decision, judgments, perceptions and portraying behaviors. They are deeply connected to the human's brain.
The "thalamus," a small structure that is situation above the brain stem, plays a vital role when it comes to how emotions affect perception on the fast track (fast pathway) and slow track (slow pathway).
For example, when you are carrying a baby then your feet hit on a rock while walking, the immediate response is "fear" that the baby will fall. The thalamus becomes activated, then it sends a message to the amygdala (part of the limbic system). The amygdala processes your emotions by telling you to hold the baby tighter as it might fall. This is how the emotions affect the perception on the fast track. So, the person perceives the situation as urgent and that he needs to do something immediately. This is primarily true for primary emotions.
On the contrary, when a person loses a boyfriend, the emotions experienced are considered more complicated. So, the emotion felt here is secondary and it follows the slow pathway. Once the information is received by the thalamus, it is being analyzed first before it moves to the amygdala. So, the emotion experienced here is more complicated.