How Our Brain Purges Bad Memories
A particular neuronal circuit between the two regions of the brain: the amygdala and the prefrontal cortex, is found to be responsible for alerting us when a particular threat has been eliminated.
The many neurological circuits between these two areas of the brain are the reason we experience and are able to regulate our fear response.
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Consciousness is everything you experience - taste, pain, love, feeling. Where these experiences come from is a mystery.
Many modern analytic philosophers of mind either deny the existence of consciousness, or they argue that they can never be meaningfully studied by science.
Recent studies suggest we employ the same neurophysiological mechanisms while dreaming that we use to construct and recall memories while we are awake.
Studies also found that vivid, bizarre and emotionally intense dreams are linked to parts of the amygdala and hippocampus. The amygdala plays a key role in processing and memory of emotional reactions. The hippocampus is implicated in important memory functions, such as the consolidation of information from short-term to long-term memory.
Certain smells that are associated in our minds to events or locations from the past, trigger our memories to revisit them. This association of the past through the sense of smell works better and is more vivid than the sense of touch or sight.
Example: Smelling the pages of a new book may remind us of late-night reading as a kid.
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