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Emotions are considered as lower level reactions.
They first arise in subcortical areas of the brain such as the amygdala and ventromedial prefrontal cortex. These areas are responsible for biochemical reactions that directly affect our physical condition. Emotions are encoded in our DNA and are thought to have evolved as a way to help us respond quickly to various environmental threats, much like our fight-or-flight response. The amygdala has also been shown to play a role in releasing neurotransmitters that are essential for memory, so emotional memories are often stronger and easier to recall. Emotions have a stronger physical basis than feelings, which means researchers can more easily measure them objectively using physical signals such as blood flow, heart rate, brain activity, facial expressions and body language.