haig2 comments on Entangled Truths, Contagious Lies - Less Wrong

23 Post author: Eliezer_Yudkowsky 15 October 2008 11:39PM

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Comment author: haig2 16 October 2008 07:32:45AM 0 points [-]

A new method of 'lie detection' is being perfected using functional near infrared imaging of the prefrontal cortex:

http://www.biomed.drexel.edu/fNIR/Contents/deception/

In this technique the device actually measures whether or not a certain memory is being recalled or is being generated on the spot. For example, if you are interrogating a criminal who denies ever being at a crime scene, and you show them a picture of the scene, you can deduce whether he/she has actually seen it or not by measuring if their brain is recalling some sensory data from memory or newly creating and storing it.