Polygraphy ANS 2014

8/9/2019 Polygraphy ANS 2014

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Polygraphy:

ANSHermie Terrence I. Reodava


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Role of the ANS in thePolygraph Examinations

• Conscious mental efort o a mentallynormal person lie causesphysiological changes w/in a body

• physiological efectors in polygraphexamination are the Autonomicnervous system


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Autonomic nervoussystem

• Responsible or regulatingmechanism that corrects theslightest deviation rom a particularstandard within very ne limits

• This i ound at the center o thebrain and its central controls is in the

!hypothalamus"


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#hat is hypothalamus$

• % group o nerve cells o the brainthat re&exes those that we cannotcontrol consciously

• 'uch as( heartbeat) pulse rate)increase and decrease in bloodpressure and the expansion and

constricting o the arteries


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When senses detects threatto well being what

happens!


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in Polygraph testing:

The hypothalamus immediately activates the sympathetic

subdivision of the autonomic nervous system


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"ypothalamus activated:

• *repares the body or ght or &ight

• Causes the adrenal glands to secrethormones – Epinephrine

– Norepinephrine

• +lood will be distributed to areas o the

body needed to meet the emergency+rain or larger muscle group


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Sympathetic system isactivated:

t


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xterna serva esigns and symptoms of

$ies%&eception,. 'tammering/sweating to or beore -od thathe/she did not commit the ofense

. *ointing his/guilt to somebody else

. Reuses to answer 0uestion thru alibis andexcuses

1. %ll the time absent2minded

3. %lways re0uesting or repetition o 0uestions

4. 5ten as6s counter20uestions and counter20uerries


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7. +lushing) paling or prouse sweating oorehead

8. 9ilation o the eyes) protrusion o eyeballs

and elevation o upper eyelids:. '0uinting o the eyes) protrusion o eyeballs

and elevation o upper eyelids

,;.Twitching o the lips and or excessive

win6ing o the eyes

,,.


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,.=xcessive activity o the %dam>s apple and thevein at the temple due to dryness o throat andmouth. 'ometimes with shivering o the nose ornostrils

,.% peculiar monotone o the voice or a orcedlaugh

,1.Rolling o eyeballs rom one direction to another

,3.5ten as6s permission to go comort rooms) etc,4.


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,7.'winging o legs or one leg over the other

,8.?nnecessary movement o hands andeet @li6e scratching) nail biting) thumb or

nger suc6ingA,:.*ulsation o the artery in the nec6

;.Incoherence) trembling and sweating o

the whole body


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Non'verbal (ehavioralAssessment

• Corresponding line o suspectassessment is the non2verbal

• =valuation o body o naturalunintentional often instinctualphysical responses to certainstimuli


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Sigmund )reud

Stated that:

“He that has no eyes, and ears to hear,may convince himself that no mortal can

keep a secret. If his lips are silent, hechatters with his ngertips; betrayalcomes out of him from every pore”


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*ategories of non'verbal(ehaviors

Emblem:

=xpresses the entire communication

Bo spo6en words necessary

%ccurate clues o persons trueeelings and statements


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+llustrators:

%ssist the listener better understandthe verbal conversation

Indicate consistency between non2verbal and verbal messages

Illustration increases

*robability o truthulness increases


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Adapter:

Bo purpose in helping the verbalcommunication

Indicators o deception

5ccur as hand gestures and bodyposition

+ncludes rubbing stro,ingmassaging or touching of the bodyor face


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Areas to Note when assessing Non'verbal (ehaviors

,.-eneral *osture

.Head and

Documents

Polygraphy ANS 2014