What they found was monumental. After a period of time, when they examined the rats, they discovered that the Disneyland rats actually had brains that were physically larger than the rats that had little enrichment and stimulation. The neural connections within the rats’ brains had grown and expanded, meaning their neurons could receive and process larger amounts of information. And not only that—these rats had more synaptic connections, more blood vessels (which means better access to oxygen and nutrients), and higher levels of good brain chemicals that trigger other physical benefits.
Ultimately, what we’ve found since Diamond’s initial groundbreaking study is that brains, adult rat and adult human alike, are highly sensitive and reactive to all aspects of any given environment—physical, psychological, emotional, and cognitive. Stimulate the brain with new things to do or new individuals to interact with and it reacts by creating new connections that cause it to physically expand. But deprive our brains of new stimulations or bore it with doing the same thing day in and day out and our connections could wither away, shrinking our brains.
Tomorrow, we’ll explore six “brain hacks” to enrich your brain.
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