memory

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Title
Smoking marijuana as a teenager lowers IQ for LIFE, scientists warn
06/07/2014

The damaging effects remain even if the person stops smoking the drug
·         Teenagers are at particular risk because their brains are still developing
·         Smoking cannabis affects critical thinking and memory
·         Researchers warn that stronger varieties today are causing more damage 


Studies, Brain, youth, Impairment, memory
Teen cannabis users have poor long-term memory in adulthood
03/12/2015

The study is among the first to say the hippocampus is shaped differently in heavy marijuana smokers and the different looking shape is directly related to poor long-term memory performance.
The study also found that young adults with schizophrenia who abused cannabis as teens performed about 26 percent more poorly on memory tests than young adults with schizophrenia who never abused cannabis.


youth, memory, Schizophrenia
Marijuana users may have ‘false memories’
04/22/2015

Participants in a study who had used the drug daily for around three years in their teens had an abnormally shaped hippocampus by the time they were in their early 20s.
They also performed around 18 per cent worse in long-term memory tests than individuals who had never touched the drug.


Brain, Biomedical, youth, memory, Studies, Research
Verbal Memory Performance and Reduced Cortical Thickness of Brain Regions Along the Uncinate Fasciculus in Young Adult Cannabis Users
04/08/2018

Conclusion: This study provides evidence that cannabis use, especially when initiated at a young age, may be associated with worse verbal memory and altered neural development along the UF. Reductions in cortical thickness in regions implicated in memory processes may underlie weaknesses in verbal memory performance.


youth, memory
Cannabis Increases Propensity for False Memories
05/08/2020

To look for longer-term effects of cannabis, the experimenters called the subjects back a week later and tested them again on the word lists, this time with a few different dummy words thrown in. They also re-interviewed the subjects about the VR scenarios using a combination of old and new questions. As before, they found lower memory accuracy in the word-association test in those who had been intoxicated compared with sober participants. There were no statistically significant differences between the groups for the virtual reality scenarios, a result that Kloft says may indicate memory decay over time in all participants.


Research, memory, false memories
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