Monday, February 06, 2006

Interest in new brain-scanning technology is beginning to show a sinister side

Brain scientists are on a roll. Concern about rising levels of mental distress have resulted in unprecedented levels of funding in the US and Europe. And a range of new technologies, from genetics to brain imaging, are offering extraordinary insights into the molecular and cellular processes underlying how we see, how we remember, why we become emotional.
Brain imaging has become familiar. Scanners, known by their initials - CAT, PET, MRI - began as clinical tools, enabling surgeons to identify potential tumours, the damage following a stroke or the diagnostic signs of incipient dementia. But neuroscientists quickly seized on their wider potential. The images of regions of the brain 'lighting up' when a person is thinking of their lover, imagining travelling from home to the shops, or solving a mathematical problem, have captured the imagination of researchers and public alike. What if they could do more?

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