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Doar

As I tolć you I would, I nas dowa in Tashington for several meotings,and for that roason was unablo to tot to anser your quostions boforo this. First, as concorns the uso of flickoring lights in intorrogationi Thc inquiror tays thnt it is "evidont that this pothod is usod to confuso or exhaust tho man;" ¿ctually 1 vithin rocont yoers thero has been a considerabls interest mong neuro-physiologists, nourolozists, and psychintrists, and tho phenononon of increased excitability of the sotor cortox folloviss sonsory stimulation tnd incicontal to this tha use of strcboscopic light stisulation was deviseć by Hlonri Gastoaut, a Pronch invcatigator who Sirst roportod on ths conbinatien of this typo of photis stimulation wvith the added use of notraccl a az rocri aco. To havo had considorable exporionco with this particularly in the activation havo reported cn it quito oxtunsivoly..

It has been rocognized that intsrnel light stiaulation for certain can causo a grand el typs of seizuro in n suall percentago of opileptics. By using this phsnonenoa the cpiloptis throshola can bo ostsblished.

Thore are a fox persons who ean have their cortex drison by. certain frecuoncios of li-ht stinulation and essociatod «ith this thorc aro sono poculiar dissccisted exporiencos, O occasion wo havo had such porsons actually hallucinate. All ef then have, sono moasuro of illusions es a conscouanco of this.

It is ovident also that light is not tho only scnsory? stimulus thich cnn produco this effect. Sonic activation has also;boen reporteù (soa Arollanco ot al) in G Clin, Neurophyaiol. 1950, 2:215-217.

Thoro is rathor extensivo litöraturo ón tho subject which can bo gotton togother for you if you wish.

Pher biten t

Novombor 16, 1355

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You nontion your «illinnóss to holv us putain cortain nodications and drars voro they not ordinarily aveilablo, and I would now liko to nuk about tha ossibility ol gatting a C-lé tarzul on Ixacrcic aci I hai montionsd to you eur planncd wor't on tho dotoction of it in various nucleli in tho.central norvous syrten by utilising icctoris tochiique of havinr is Flusresce under ultraviolot 1i-he. As you ccn sppreciato, wo cro ucaling in oxtretely small quantitios and for thnt ronson fool that it would be well to bo roro aoourato as woll es to dotoot sall qvantitios by tho uso of a rarioautorruph tschniquo that is having tho brain slicus tako their onm photosrachs on fila tho oxposuro boirg acconplishod by tho prosenco of radioactivo carbon.

I will bo clad to spell out tho foreroinz in noro dotail if it would bo helpul. Then, too, sanotizo ero wo talkod cbout tho possibility of our otudvin- Aanita cantherina toxicity providei cono of tha sunstance coulá bo nado available. io have sot up a prograr whoroby wo can look into tho\_rima corynbosa you soat zo with a vioz torard running dom tho recponsible factor.

With kindest regards.

Sincoroly,

Amanila phalloides.

Novorbor 16, 100