AN OVERVIEW OF EXTRASENSORY PERCEPTION

• Document Type: CREST
• Collection: STARGATE
• Document Number (FOIA) /ESDN (CREST): CIA-RDP96-00787R000200090019-3
• Release Decision: RIPPUB
• Original Classification: U
• Document Page Count: 4
• Document Creation Date: November 4, 2016
• Document Release Date: September 5, 2003
• Sequence Number: 19
• Publication Date: January 27, 1975
• Content Type: SUMMARY

Approved For Release 2003/09/10 : CIA-RDP9670078878 00200090019-3
AN OVERVIEW OF EXTRASENSORY PERCEPTION
SG1I
January 27,
The following brief summary presents some conclusions and
observations derived from an independent, and somewhat critical,
study of extrasensory perception over the past several months. These-
opinions are based upon study of the literature, material presented
at the Geneva Conference of the~Parapsychology-Foundation in August
1974 and, in particular, the work of Puthoff and Targ at SRI as
reflected in their. publications as well as their oral presentation
in Washington. First some general observations and recommendations
in this area are presented, then a brief comment on the SRI work,
and finally somer"remarks about' practical applications.
GENERAL OBSERVATIONS AND RECOMMENDATIONS
1. A large body of reliable-experimental evidence points to the
inescapable conclusion that ext;,asensory perception does exist
as a real phenomenon, albeit characterized by rarity and lack
of reliability. It appears as a low-capacity, high-noise
information channel exhibiting data rates orders of magnitude
less than normal perceptive processes. Almost by definition
extra-sensory perception must involve.-in an essential way the
operation of the human mind.
2. There exists no satisfactory theoretical understanding of
these phenomena. Present theories, of which there are-many,
are both speculative and unsubstantiated. They range in content
from. the physical through the psychological to the metaphysical.
One theory- that of the French physicist, Costa de Beauregard-
offers the possibility of interpreting psi phenomena within
amodest extension-of established physical theory, but in general
these efforts appear premature. At this stage of knowledge
the most meaningful basic research consists of a search for.
correlates- physical, physiological, and psychological- to
which the phenomena may be quantitatively related. Guidance
must consist of general ideas which are not dependent upon
possibly overspecific theoretical assumptions.
Approved For Release 2003/09/10 : CIA-RDP96-00787R000200090019-3
 Approved For Release 2003/09/10 : CIA-RDP96-007000200090019-3
All the experimental evidence to date is consistent with the
assumption that paranormal perception behaves as an information
channel in the conventional sense of information theory. The
information theoretic approach to investigation in this area
has probably not been adequately exploited but offers definite
possibilities of aiding understanding as well as practical
advantages. The success of enhancement techniques such as
redundancy, majority vote, etc. is indicative of the efficacy
of even simple applications of information theory in parapsychological
research.
a. Information theory in itself makes no assumptions of specific
mechanism, but contains a body of concepts ( bit rate, redundancy,
equivocation, etc.) by which experimental results may be
quantitatively presented and analysed.. Moreover these quantities
have direct meaning in terms of applications.
b. Although problems of coding are of central concern in information
theory, it is innately an input-output theory. Experiments can
be devised to measure information rates in comparatively unstructured
situations, independently of coding assumptions.
c. The very low information rates ( 0.01 to 0.1 bits/sec ) measured
in extrasensory perception may explain the failure--to detect
physical energy or correlated physical variables associated with
the phenomena. A signal lower in strength than thermal noise and
only detectable through its high redundancy would exhibit a similar
low rate of information transmission. Physical energy less than
thermal noise would be;yery difficult to detect.
The complete ESP channel may or may not involve a detectable
physical link, but it most certainly does involve a psychological
one. Although difficult to quantify there do appear to exist some
genuine psychological correlates of paranormal perception. Rather
than detail these, mention is made of only one aspect which seems
especially significant, namely the striking similarity between
many psychological features of paranormal perception and normal,
though subliminal perception. Clearly this suggests that similar
processes may be operative in both cases and that studies of
subliminal perception below the conscious threshold. y''be of
relevance to the psychological part of paranormal perception.
5._ The physiological correlates of extrasensory perception which have
been measured are autonomic responses and therefore?somewhat related
to emotional responses. Variations of BEG alpha rhythm, galvanic
skin resistance and blood capillary volume have all been identified
in relation to extrasensory activity. There is some experimental
evidence for believing that these physiological responses may be
Approved For Release 2003/09/10 : CIA-RDP96-00787R000200090019-3
 Approved For Release 2003/09/10 : CIA-RDP96-0077000200090019-3
more sensitive indicators of paranormal communication than -
consciously controlled responses. Presumably a large part
of the noise in the paranormal channel originates by the
interfering effect of conscious processes, and measurement
of autonomic responses could short circuit a noisy part of
the channel. Also the physiological responses themselves
are directly accessible to physical, instead of only psychological,
measurement.
THE RESEARCH AT STANFORD RESEARCH INSTITUTE
The work at SRI, using gifted individuals, has acheived some
convincing and striking demonstrations of the existence of paranormal
perception, and has demonstrated perhaps less convincingly the
possible existence of psychokinetic influences upon sophisticated
physical instrumentation. The careful-and systematic use: of sensory
shielding in these experiments has excluded a large class of gross
physical correlates of paranormal perception. The work has been
less successful in.showing unambiguous relations of inhibition or
enhancement between paranormal performance and possible physical,
physiological, and psychological conditions. The enhancement method
used was selection of special individuals either through prior
reputation or through preliminary screening.. Thus the approach was
one of enhancement through selectivity rather than enhancement
(or inhibition) by deliberate manipulation of variables. This research
produced some information,z,measurement of alteration of alpha rhythm
amplitude and measurement of neurological profiles, relevant to the
question of correlates but was not aimed primarily in this direction.
The contribution to fundamental understanding was a minor pofthis work, but it produced manifestations of extrasensory perception
sufficiently sharp and clear out to justify serious consideration of
possible applications.
A separate point is that the high apparent bit rate of information
transmission implied by successful replication of drawings or recital
of detailed descriptions may be illusory.. In no case was the percipient
asked to replicate or describe unfamiliar or unknown objects. A low
bit rate may trigger detailed stored associations which in themselves
have high information -content.
PRACTICAL APPLICATIONS
No matter how gifted the paragnost existing ilgnoraneeof.?the basis
of paranormal phenomena together with the capricious and unreliable
nature of the channel dictate that information derived from this source
can never stand alone and must Jie used with caution. Extrasensory
Approved For Release 2003/09/10 : CIA-RDP96-00787R000200090019-3
 Approved For Release 2003/09/10 : CIA-RDP96-0078`7RR000200090019-3
NOO M_
information should at best supplement normal information or guide its
collection, but should never serve in place of it. Even such limited
use of this information channel would seem:o require-much more detailed
investigation of its character and limitations. A certain bare minimum
of understanding, or at least experience, is required to establish
confidence. Experimental tests guided by a thorough information theoretic
.analysis, as alluded to earlier, offer the closest coupling with
applications and the best prospect of usefully quantifying the capabilities
of this information channel.
Approved For Release 2003/09/10: CIA-RDP96-00787R000200090019-3