How does memory work in the brain when cells are replaced?
I read a funny joke the other day that if you haven’t seen someone for 7 years, you don’t have to say hi because every cell has been replaced and they are a new person.
That being the case, how does memory work in the brain? Or are brain cells not replaced the same way?
In: Biology
the fun fact about 7 Year cell replacement is just an average. some cells like skin cells replace every 14 days (or maybe 28 days, not sure)
Others like mussel cells can take 15 years.
nerve cells are special. after they are first developed they are never replaced. they can grow longer and repair damage, or grow new synapses, but the actual nerve cell doesn’t replicate like other cells do.
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