The depths from 10 to 30 m are usually not considered narcotic in scuba air-diving, and evidence of psychomotor disturbances attributable to nitrogen narcosis at these depths is weak and contradictory. 15 experienced male divers were tested in a chamber at 1, 2, 3, and 4 bars over five consecutive days using a battery of computer generated psychological tests-Computerized Reactionmeter Drenovac...

Noninvasive alternating current stimulation can induce vision restoration in patients with chronic optic nerve damage and results in electroencephalogram (EEG) aftereffects. To better understand the mechanisms of action, we studied such EEG "aftereffects" of transcorneal alternating current stimulation (tACS) at the chronic posttraumatic state in rats. EEG baseline was recorded from visual cort...

OBJECTIVES The aim of this study is to clear the status of recreational scuba divers in Japan for promoting safety in recreational diving. METHODS A five year (from 1996 to 2001) questionnaire survey was performed of Japanese divers at the Osezaki area in Japan. The subjects of this survey included diving instructors as well as recreational divers. Based on the obtained data, the study invest...

The paper presents a method of study designed to establish the narcotic potency ratio between the two agents methohexitone and propanidid. Comparisons were made through a range of five doses of each drug such that the smallest dose failed to produce narcosis in 50 per cent of subjects and the largest resulted in over 50 per cent still unresponsive after 6 minutes. By plotting curves relating do...