Final answer:
Positive emotions are associated with more activity on the left side of the brain, as part of the complex interplay within the brain's structures like the amygdala and hippocampus involved in emotional processing.
Step-by-step explanation:
Positive emotions evoke more activity on the left side of the brain. This concept arises from studies on hemispheric dominance, where the left hemisphere is linked to aspects such as forming associations in memory, selective attention, and positive emotions, while the right hemisphere is more involved with pitch perception, arousal, and negative emotions. The limbic system, which includes structures like the amygdala and hippocampus, plays a significant role in emotional processing. It's also important to note that though we can pin certain emotions to a hemisphere, the brain operates interactively, with both hemispheres contributing to a full emotional experience. Additionally, the amygdala is particularly implicated in responses to fear and anxiety, highlighting the close connection between emotions and various brain regions.