This presentation is all about Narco analysis used in Forensic Investigation

1. SUBMITTED BY: PALLAVI KUMARI
SAM HIGGINBOTTOM
UNIVERSITY OF
AGRICULTURE AND
TECHNOLOGY

2.  INTRODUCTION
 WHAT ARE NARCO-ANALYSIS
 TEAMS OF EXPERT
 DRUGS USED
 EFFECT OF DRUG ON CNS
 MECHANISM OF ACTION
 PROCEDURE IN NARCO ANALYSIS
 CASES
 LEGAL STATUS
OVERVIEW

3. All truths are easy to
understand once they
are discovered , the
point is to discover
them…….
And one such way to
discover the truth is

4.  The main intend of narco-analysis test is to extract
information from the accused when he is in the hypnotic
state .And the entire responsibility of this procedure’s is on
the doctor and the forensic psychologist
 Narkc = anaesthesia
 The term narco-analysis was given by horseley
 It is also known as truth serum or drug hypnosis or narco
interview techniques
 It is a process of abreaction or catharsis

5. The subject’s imagination is neutralised by
making the accused semi conscious. In this
state , it becomes difficult for him to lie & his
answers would be restricted facts he is already
aware of . Expert inject the subject with
SODIUM AMYTAL
The dose is dependent on the person’s sex,
age , health and physical condition. A wrong
dose can result a person going into a coma ,
even death
The answer’s are believed to be spontaneous
as a semi conscious person is unable to
manipulate the answers.
WHAT ARE NARCO ANALYSIS
TEST ?

6. ROLE
•IN DISPIUTED PATERNITY
CASES
•INSURANCE CLAIMS
•PRE EMPLOYMENT
SCREENING
CIVIL
PURPOSE
•TO TESTIFY THE TRUTH IN
STATEMENTS MADE BY
OFFENDERS, CRIMINALS
& SUSPECTS
CRIMINAL
PURPOSE

7. CLINICAL
FORENSIC
PSYCHOLOGIST
PSYCHIATRIST
PHYSICIAN
ANAESTHESIA
AUDIO-
VIDEOGRAPHER
WRITER
TEAMS OF EXPERT

8. OPERATION THEATRE

10. MECHANISM OF ACTION
BARBITURATE +GABA
ACTIVATION OF GABA RECEPTOR
OPENING OF CHLORIDE CHANNEL
INCREASE THE DURATION OF GABA
GATED CHANNEL OPENING
HYPERPOLARISATION OF CELLS
DEPRESSION OF CNS

11. PROCEDURE IN NARCO ANALYSIS
PRE TEST INTERVIEW
PRE NARCOTIC STATE
SEMI NARCOTIC STATE
POST TEST INTERVIEW

12. PRE TEST INTERVIEW
 INDIVIUAL IS EXPLAINED REGARDING
THE WHOLE PROCEDURE AND
INFORMED CONSENT IS TAKEN.
PRE NARCOTIC STATE
 ANAESTHETIST INDUCES NARCO AND
MAINTAIN THE PRE NARCOTIC STATE
THROUGHOUT THE INTERVIEW
 DRUG IS INJECTED TILL THE PERSON
APPEARS RELAXED AND IN A STATE OF
GOOD CONTACT

13. DRUG AND DOSAGE

14. Individual is allowed to sleep off
and allowed to wake up on his/her
off
Forensic psychologist or psychiatrist
facilities the interview
Nystogmus observing by testing
examinee's eye with finger
Complete narco interview is audio-
video recorded & also written
SEMI NARCOTIC STATE

15.  memory is checked
Individual is allowed to know what he/she has
spoken during interview
Individual experience more relax &anxiety
free state
POST TEST INTERVIEW

16. Cases where narco analysis has been
performed in India

17. Cases where narco analysis has been
performed in India

18.  On 5th may 2010 supreme court
of India concluded following
point with respect to this test
 Article 20(3) of the Indian
constitution “no person accused
of any offence shall be
compelled to be witness against
himself”
 The test result cannot be
admitted as evidence if they have
been obtained through the use of
compulsion
Legal status in India

19. DRAWBACKS OF NARCO-
ANALYSIS TEST