Why you don't remember being a baby: Study examines infantile amnesia
Research suggests the formation of new cells in the brains of babies could be disrupting the circuits that hold memories
Researchers believe they are closer to discovering why adults cannot remember the first few years of childhood, after a study found the increased rate that new cells are produced at in the brains of babies could increase forgetfulness.
Scientists from the University of Toronto in Canada found that 'infantile amnesia', or the inability to recall memories from early childhood, could be exacerbated by the higher rate the human brain generates new cells at in early life.
Infants are constantly learning new things resulting in lots of activity within the hippocampus region, which is associated with learning and memory.
During the study, the team produced memories in rodents by creating an association between a place and a mild electric shock.
They then increased or decreased the rates of neurogenesis to see what would happen to the memories later on, according to Vox, using a running wheel or drugs.
Boosting the rate of neurogenesis, the process of the brain making new cells, in rodents increased forgetfulness, whereas rodents that had the process slowed down were instead better at remembering things.
They also found the same results in guinea pigs and degu, who have naturally lower rates of neurogensis as infants because they are born with more mature brains. When the team increased their rate of neurogenesis, they struggled to store memories from shortly after being born.
Mazen Kheirbek, who studies the birth of new brain cells at Columbia University said: "I think [the new hypothesis] provides a very compelling mechanism for why we don't remember infantile memories."
However, he suggested the forgetfulness could also be attributed to an increased ability to learn new things, adding: "So there is a tradeoff there, preserving the older memories may come at the cost of making new ones."
- 1 Malaysian cyclist could face disciplinary action after 'Save Gaza' gloves protest
- 2 Is Gideon Levy the most hated man in Israel or just the most heroic?
- 3 Fifty Shades of Grey trailer provokes moral outrage from US parenting groups
- 4 McDonald’s removes chicken nuggets from the menu in Hong Kong amid major food scare
- 5 Students offered grants if they tweet pro-Israeli propaganda
The 'scroungers’ fight back: The welfare claimants battling to alter stereotypes
Arizona execution lasts two hours as killer Joseph Wood left 'snorting and gasping' for air
Malaysia Airlines MH17 crash: Ukrainian military jet was flying close to passenger plane before it was shot down, says Russian officer
Malaysia Airlines MH17 crash: Massive rise in sale of British arms to Russia
Malaysia Airlines MH17 crash: victims’ bodies bundled in black bags and loaded onto trains
John Barrowman praised for Commonwealth Games opening ceremony gay kiss
£600 - £650 per day: Orgtel: Conduct Risk Liaison Manager - Banking - London -...
Highly Attractive Package: Austen Lloyd: CITY - COMMERCIAL LITIGATION - GLOBAL...
£65000 - £75000 per annum + Benefits: Progressive Recruitment: The client is a...
£40000 - £45000 per annum: Ashdown Group: A well-established software house ba...