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MEMORANDUM FOR: Director of Central Intelligence SUBJECT: Artichoke Cases, June 1952,

1. Between 4 June 1952 and 1&June 1952, an Is50 tcam, composed of ASO Staff Officers, applied Artichoke techniques to two operational cases in a safe house nears and represented the G in connection with. this work and handled the medical and connected psychiatric problems/with this work.

2. Although requcsts were made in the field for additional subjects, only two subjects were handled at this time. Both of these individuals could be classed as experienced, professional-type agents and suspected of working for

3. In each case, a psychiatric-medical cover was used to bring the Artichoke techniques into action. In the first case, light dosages of drugs coupled with hypnosis xere used to induce a complete hypnotic trance.. This trance was held for approximately one hour and forty minutes of interrogation with a subsequent total amnesia produced by post-hypnotic suggeation. In the socond case (an individual of much higher intelligence than the first), a deep hypnotic trance was reached after light medication.

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This was followed by an interrogation lasting for well-over an hour. How
ever, a partial amnesia only was obtained at this tine, although a total
amnesia was obtained for the major part of tnis test. Sincc further in
terrogation was desired, a second test was made on this individual in
which the Artichoke technique ol using a straight medication was employed.
On this test, highly successful results were obtained in that a full in
terrogation lasting two hours and fifteen minutes was produced, part of
which included aremarkable regression. During this regression, the sub
ject actually "relived" certain past activities of his life, sone dating
back fiftoen years while, in addition, the subject totally accopted (the case officer amd interpretor at this time) as an old trusted and belowd personal friend whom the subject had known in year3 past in Total annesia was apparently achieved for the entire second test on this case.

4, Chemicals used in the hypnotic approach were very light and carefully controlled dosages of sodium pentothal. In the secoud case, on the second test, where drugs alone were used, heavy dosages of sodium pentothal were coupled with the stimulant Desoxyn with outstandin, success. In connection with the above cases, it should be noted that both subjects were Sspeaking wind spoke no English, yet hypnosis was obtained by using, an inexperienced interpretor who was directed in English by. throngh a complex electronic intercom system.

5. For a matter of record, the case officers involved in both cases expressed themselves to the effect that the Artichoke oporations were entirely successful and team members felt that the tests demonstrated

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conclusively the effectiveness of the combined chemical-hypnotic technique in such cases. In both cases, the subjects talked clcarly and at great length and furnished information which the case officers considored extremely valuable.

6. For matter of record, hypnotic inductions were made by who directed and controlled (a case officer), who enacted the difficult role of interpretor-hypnotist in an excellent manner. Technical arrangements, which were extremely complex and included multiple intercommunication systems and full tape recordings, Security arrangements, which were handled by involved a double guard system and transportation ani coc under the personal jects, were handled by the office of direction of and were outstanding in every resdect. Case officers were , who speaks fluent and acted (Case #2). also as general interpretor (Case #l), and Both were exceptionally well erounded and very helpful. Ths medical and shich wasa rilalpaido U rh psychiatric work and cover/was perfectly executed by and

7. A full technical report of the Artichoke operations is being prepared by tais office and will be conpleted in the immediate future. Ir, however, additional details are desired by your officn, I&5O will be pleased to (urnish them imncdiately.