Computer Algorithm Uses Brain Scans to Pick Out Memories

The algorithm can read which of three short films human volunteers are thinking about

By Jeremy Hsu Posted 03.12.2010 at 11:06 am 3 Comments

MRI machine A researcher prepares to go into an MRI machine (NOT an fMRI machine) at the Wellcome Trust Center for Neuroimaging. University College London

Brain scan technologies still can't do mind reading as such, but they do provide a window into what the human brain is doing at a given time. Now a computer algorithm has used brain activity patterns to predict which of three activities human volunteers were remembering.

Scientists showed 10 volunteers three short films that featured women carrying out ordinary activities. Some of the footage included drinking coffee and then tossing the paper cup, as well as mailing out a letter.

The volunteers then recalled each of the films inside an fMRI brain scanner, which gauges brain activity based on changes in the brain's blood flow. That allowed the computer algorithm to study the brain activity patterns, and then start predicting purely based on the patterns.

University College London researchers at the Wellcome Trust Center for Neuroimaging focused specifically on the hippocampus region of the brain, which seems to play a crucial role in recording episodic memories. Three particular areas of the hippocampus lit up consistently in all participants -- but the scientists remain unsure as to the exact role for each.

Too bad the same computer probably couldn't predict which short films Oscars viewers were thinking of, if only because short films don't usually register for most moviegoers. But at least the shorts do get some center-stage attention, unlike the Sci-Tech Oscars hidden away in the cupboard under the stairs.

[via ScienceDaily]

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3 Comments

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The Famous

03/12/10 at 1:42 pm

This discovery will be of great consequence to the advancement of stage hypnotists worldwide. They will await a portable MRI with baited breath.

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ryannewman

10/19/10 at 2:44 am

With so much irrelevant research that does not hing to improve human life, this is a breadth of fresh air. It is always pleasing to view articles that underlay a motivation to improve and identify human frailties and what can be done to prevent or correct illness.

www.scootek.co.uk

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