lathwal bhai fingerpriniting.ppt

8/14/2019 Lathwal Bhai Fingerpriniting.ppt

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Brain FingerprintingBrain FingerprintingDr. Lawrence A. FarewellDr. Lawrence A. Farewell

Presented byPresented by Tonya Slager Tonya Slager



The fundamental difference between The fundamental difference between

the perpetrator of a crime and anthe perpetrator of a crime and aninnocent person is that theinnocent person is that the

perpetrator, having committed theperpetrator, having committed the

crime, has the details of the crimecrime, has the details of the crime

stored in his memory, and thestored in his memory, and theinnocent suspect does not.innocent suspect does not.

This is what rain Fingerprinting This is what rain Fingerprinting

testing detects scientifically, thetesting detects scientifically, thepresence or absence of specificpresence or absence of specific

information.information.



Defining Brain FingerprintingDefining Brain Fingerprinting

Scientific techni!ue to determine whether or notScientific techni!ue to determine whether or notspecific information is stored in an individual"sspecific information is stored in an individual"sbrainbrain

#elevant words, pictures or sounds are presented#elevant words, pictures or sounds are presentedto a sub$ect by a computer in a series with stimulito a sub$ect by a computer in a series with stimuli

The brainwave responses measured using a The brainwave responses measured using apatented headband e!uipped with %%& sensorspatented headband e!uipped with %%& sensors

P'(() Specific, measurable brain responseP'(() Specific, measurable brain response emitted by the brain of a sub$ect who has the relevantemitted by the brain of a sub$ect who has the relevant

information stored in his braininformation stored in his brain



How Does it Work?How Does it Work?

measurements are recorded in fractions ofmeasurements are recorded in fractions of

a second after the stimulus is presented,a second after the stimulus is presented,

before the sub$ect is able to formulate orbefore the sub$ect is able to formulate or

control a responsecontrol a response Dr. Farwell discovered that the P'(( wasDr. Farwell discovered that the P'(( was

one aspect of a larger brain)waveone aspect of a larger brain)wave

response that he named and patented, aresponse that he named and patented, a

*%#*%# +memory and encoding related*%#*%# +memory and encoding relatedmultifaceted electroencephalographicmultifaceted electroencephalographic

responseresponse



rain responses were recorded fromrain responses were recorded fromthe midline frontal, central, andthe midline frontal, central, andparietal scalp locations, referencedparietal scalp locations, referencedto lin-ed mastoids +behind the ear,to lin-ed mastoids +behind the ear,

and from a location on the foreheadand from a location on the foreheadto trac- eye movementsto trac- eye movements At the end of each test, sub$ectsAt the end of each test, sub$ects

were given a written list of allwere given a written list of allstimulus items and as-ed to mar-stimulus items and as-ed to mar-each item as noteworthy, somewhateach item as noteworthy, somewhatnoteworthy, or irrelevant thosenoteworthy, or irrelevant those

mar-ed were thrown outmar-ed were thrown out



/nformation is absent/nformation is absent /nformation is/nformation is

presentpresent



The MERMER includes:The MERMER includes:

0. The P'(( )an electrically positive0. The P'(( )an electrically positive

component ma1imal at the parietalcomponent ma1imal at the parietal

scalp sitescalp site

2. Another, longer latency, electrically2. Another, longer latency, electrically

negative subcomponent prominentnegative subcomponent prominent

at the frontal scalp siteat the frontal scalp site

'. Phasic changes in the fre!uency and'. Phasic changes in the fre!uency and

structure of the signal.structure of the signal.



Types of ti!uli "sedTypes of ti!uli "sed

ProbesProbes Life)e1perience relatedLife)e1perience related #elevant to the investigated event )recogni3able and#elevant to the investigated event )recogni3able and

noteworthy only for the sub$ects who had participated in thenoteworthy only for the sub$ects who had participated in theevent +*%#*%#event +*%#*%#

/ndistinguishable from the /rrelevants for a sub$ect who is not/ndistinguishable from the /rrelevants for a sub$ect who is not-nowledgeable about the situation under investigation-nowledgeable about the situation under investigation

Targets Targets Push a button to indicate -nown imagePush a button to indicate -nown image

Since the relatively rare Targets are singled out in the tas-Since the relatively rare Targets are singled out in the tas-being performed, the Targets are noteworthy for the sub$ect,being performed, the Targets are noteworthy for the sub$ect,and each Target stimulus elicits a *%#*%#and each Target stimulus elicits a *%#*%#

/rrelevant Stimuli/rrelevant Stimuli information relevant to the crime that the suspect claims toinformation relevant to the crime that the suspect claims to

have no -nowledge of have no -nowledge of



#ase tudies#ase tudies

F/) new agents 0((4 accurateF/) new agents 0((4 accurate

5/A) ' e1periments5/A) ' e1periments

Pictures rather than verbal cuesPictures rather than verbal cues 6ords7phrases to determine connection6ords7phrases to determine connection

between professionals, theirbetween professionals, their

organi3ation, and -nown informationorgani3ation, and -nown information

related to wor-related to wor- #eal)life events including 2 felony#eal)life events including 2 felony

crimescrimes



;uestions<;uestions<

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lathwal bhai fingerpriniting.ppt

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