Brain Scan. Why use the Brain?. Why use the Brain?. PRINT OUT. http://images.google.com/images?gbv=2&hl=en&client=firefox-a&rls=org.mozilla:en-US:official&um=1&q=brain+scan+fingerprinting&sa=N&start=72&ndsp=18. http://www.sciencenews.org/view/generic/id/35012/title/Fingerprints\_go\_high-tech
The judge gave her a Life sentence.
Hmmm.. who said India's legal system is not evolved? We may not get enough justice done.. but when it is done.. we like it the High Tech way :)
Btw, do you agree with the way the brain scan was used in this case to decide upon a woman's life sentence?
Although not a "brain scan" as the term is usually used, the EEG, or electroencephalograph, deserves mention as one of the first -- and still very useful -- ways of non-invasively observing human brain activity. An EEG is a recording of electrical signals from the brain made by hooking up electrodes to the subject's scalp. These electrodes pick up electric signals naturally produced by the brain and send them to galvanometers (instruments that detect and measure small electric currents) that are in turn hooked up to pens, under which graph paper moves continuously. The pens trace the signals onto the graph paper.
Although it was known as early as the nineteenth century that living brains have electrical activity, an Austrian psychiatrist named Hans Berger was the first to record this activity in humans, in the late 1920s. EEGs allow researchers to follow electrical impulses across the surface of the brain and observe changes over
split seconds of time. An EEG can show what state a person is in -- asleep, awake, anaesthetized -- because the characteristic patterns of current differ for each of these states. One important use of EEGs has been to show how long it takes the brain to process various stimuli. A major drawback of EEGs, however, is that they cannot show us the structures and anatomy of the brain or really tell us which specific regions of the brain do what.
Researchers pinpoint brain waves that distinguish false memories from real ones
To test whether distinct patterns of electrophysiological activity prior to a response can distinguish true from false memories, psychologists at Penn recorded brain activity from 52 neurosurgical patients being treated for drug-resistant epilepsy. Patients were asked to perform a verbal free-recall task while researchers used an array of implanted electrodes and intracranial electroencephalographic recordings to locate where in their brains the patients’ seizures originated. Patients volunteered to study lists of words which they were then asked to recall at a later time. When asked to recall the studied words, participants recalled some number of correct items and also made a small number of errors, recalling words that had not appeared on the target list.
Brain Fingerprinting technology presents a new paradigm in the psychophysiological detection of concealed information. This new system detects information directly, on the basis of the electrophysiological manifestations of information-processing brain activity, measured non-invasively from the scalp. Brain Fingerprinting technology depends only on brain information processing, it does not depend on the emotional response of the subject.
Brain Fingerprinting technology utilizes multifaceted electroencephalographic response analysis (MERA) to detect information stored in the human brain. A memory and encoding related multifaceted electroencephalographic response (MERMER) is elicited when an individual recognizes and processes an incoming stimulus that is significant or noteworthy.
When an irrelevant stimulus is seen, the P300/MERMER is absent. This pattern occurs within less than a second after the stimulus presentation, and can be readily detected using EEG amplifiers and a computerized signal-detection algorithm.
A. Parietal Area
B. Frontal Area
Average brain responses recorded in response to three types of stimuli:
Measure the activity of the central nervous system (brain and spinal cord) rather than the peripheral nervous system (as polygraph testing does).