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This article presents abstracts of papers presented at the twelfth annual meeting of the Society for Psychophysiological Research, which was held at the Hotel Sheraton-Plaza in Boston, Massachusetts on November 9-12, 1972. The paper presented by J.C. Jackson and F.K. Graham of the University of Wisconsin cites threshold intensity effects on two orienting response components. Sokolovian theory suggests that the orienting response should be large near psychophysical threshold, fall to a minimum around 10-20 decibels and then rise again until it is depressed by competition with the defense reflex.

Highlights the symposium sponsored by the Data Sciences Laboratory of the Air Force Cambridge Research Laboratories at the Hotel Somerset, Boston, Massachusetts on November 11-14, 1964. Objectives of the symposium; Presentation of invited papers; Attendance.