W. C. Kiefer

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The effects of melatonin given systemically at night-time were investigated in the visual system of cats by means of electrophysiological recordings from single cells in the striate cortex (area 17). Following intravenous injection of melatonin, the spontaneous discharge rate (SDR) was found to decrease in the majority of units when compared to control(More)
The ability of two cats to discriminate between two geometrical outline patterns in the presence of superimposed structured background was tested before and after bilateral removal of the lateral suprasylvian visual areas (PMLS, PLLS, AMLS, ALLS, part of area 7). There were mild deficits when patterns and background were kept stationary; these deficits may(More)
The contribution of the lateral suprasylvian cortex to pattern recognition was studied by behavioural detection experiments in combination with bilateral lesions of different parts of the lateral suprasylvian areas (LSA) and area 7 in seven cats. In a two-alternatives forced choice task the cats had to discriminate simple outline patterns which were(More)
The ability of two cats to discriminate between two geometrical outline patterns in the presence of superimposed Gaussian visual noise-i.e. in a binary detection task--was tested before and after bilateral removal of cortical areas 17, 18 and 19. The detection probability PD was measured as a function of the signal-to-noise ratio. After a lesion of areas(More)
Using a 2-alternative-forced-choice-procedure on a jumping stand, four adult cats were trained to make simple depth discriminations. They were tested binocularly and monocularly before and after bilateral lesions of different parts of the lateral suprasylvian cortex. Our results give support to a functional segregation between the lateral suprasylvian(More)
SPIRES (STANFORD PUBLIC INFORMATION RETRIEVAL SYSTEM) is a generalized, on-line database management system developed by Stanford University. Since 1972 it has supported a diverse group of users who design and maintain their own databases. This paper presents an overview of not only the conceptual model of SPIRES, but also some of the underlying(More)
At the VEXAG meeting in November 2012, it was resolved to update the scientific priorities and strategies for Venus exploration. To achieve this goal, three major tasks were defined: (1) update the document prioritizing Goals, Objectives and Investigations for Venus Exploration, (2) develop a Roadmap for Venus exploration that is consistent with VEXAG(More)
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