Most people are unable to remember their early childhood memories. Now researchers have discovered that it’s due to the production of high levels of neuron during maiden year of life that cause no room for memories. This study was presented at Canadian Association of Neuroscience.
The peak time of neurogenesis (process of formation of new brain cells) that occur in the hippocampus is before and after birth. It plays an important role in learning and remembering the things.
Now Dr Paul Frankland and Dr Sheena Josselyn, from the Hospital for Sick Children in Toronto and the University of Toronto are trying to determine the impact of new brain cells on memory storage.
This study was performed on adult and infant mice in which researchers found that increased neurogenesis cause memory loss and vice versa. It means if there would be reduction in memory if formation of new brain cell is increased (occur during infancy).
The findings of this study are enough to understand why a person is unable to recall his childhood events known as infantile amnesia.
Dr Frankland, senior scientist in neuroscience and mental health, at the hospital, said: “Why infantile amnesia exists has long been a mystery.
“We think our new studies begin to explain why we have no memories from our earliest years.
“Before the ages of four or five, we have a highly dynamic hippocampus which can’t stably store information.
“As new neurons are generated, memory may be compromised by that process.”
“This is a very interesting and elegantly executed study which shows a direct link between neurogenesis and memory formation.
“The results questions the long assumed link between verbal development and infantile amnesia and calls into question some psychological and psychotherapeutic theories on this topic.”
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