Brain activity is based on cells called neurons which interact and connect with each other forming groups or neural-networks. These neural-networks are activated based on stimuli. So when a certain stimulus is experienced – like a mouse jumping out from behind a counter – we have a brief moment of fear and jump back. neural-networks were activated that created a pathway for us to jump, for our hearts to race a bit, and possibly for us to utter a noise.
Sometimes neural-networks are exercised from stimuli that are similar but not exactly the same as other stimuli. For instance, if our teacher repeatedly asks us harshly, “why are you always late?” and we cower in response, we may have a negative reaction later in life based on the pathways that were formed from that experience to anyone who asks us “why” anything.
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