Tää on vaan viihdettä, mutta tiukan rasistin katsoessa kuvia eri värisistä ihmisistä sen perusteella, mitä sen aivoissa "fusiform face arealla" tapahtuu, voi päätellä, minkä värisen ihmisen kuvaa rasisti katsoo. Vaikkei tietäisi mitä kuvaa se katsoo.
By examining patterns of brain activity in the fusiform face area — a brain area involved in face perception — the researchers were able to predict the race of the person that the participant was viewing, but only for those participants with stronger, negative implicit race attitudes.
http://www.dailymail.co.uk/sciencetech/ ... z2IXJzlBeu
Vaikuttavampaa koehenkilölle esitetyn "stimuluksen" aivokuvien perusteella rekonstruointia:
http://www.youtube.com/watch?v=nsjDnYxJ0bo(Oikea kuva on aivokuviin perustuva ennuste, mitä koehenkilö kenties näkee magneettikuvauslaitteessa ollessaan. Vasen kuva on video, jonka hän oikeasti näkee.)
The left clip is a segment of a Hollywood movie trailer that the subject viewed while in the magnet. The right clip shows the reconstruction of this segment from brain activity measured using fMRI. The procedure is as follows:
[1] Record brain activity while the subject watches several hours of movie trailers.
[2] Build dictionaries (i.e., regression models) that translate between the shapes, edges and motion in the movies and measured brain activity. A separate dictionary is constructed for each of several thousand points at which brain activity was measured.
(For experts: The real advance of this study was the construction of a movie-to-brain activity encoding model that accurately predicts brain activity evoked by arbitrary novel movies.)
[3] Record brain activity to a new set of movie trailers that will be used to test the quality of the dictionaries and reconstructions.
[4] Build a random library of ~18,000,000 seconds (5000 hours) of video downloaded at random from YouTube. (Note these videos have no overlap with the movies that subjects saw in the magnet). Put each of these clips through the dictionaries to generate predictions of brain activity. Select the 100 clips whose predicted activity is most similar to the observed brain activity. Average these clips together. This is the reconstruction.
For a related video see:
http://www.youtube.com/watch?v=KMA23JJ1M1oFor the paper (Nishimoto et al., 2011, Current Biology) go to:http://dx.doi.org/10.1016/j.cub.2011.08.031
For more information about this work, please check our lab web site:http://gallantlab.org
Leffa Minority Report oli ilmeisesti tämän tyyppisten tutkimusten inspiroima. (Näin ainakin väitettiin jossain.)