Conditioned seizures susceptibility in the hamster induced by prior auditory exposure

Zusammenfassung Nachweis audiosensibilisierter Anfälle beim HamsterMesocricetus auratus nach Konditionierung auf akustischen Reiz.

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Supported in part by grant No. EC 00447-01 from the PHS. We thank Mrs.Barbara Beagle for technical assistance.     

Dissociation of vertical and horizontal components of activity in rats treated with lithium chloride

Résumé La chlorure de lithium, administré aux rats. a affaibli leur activité verticale, sans porter atteinte à leur activité horizontale. Ces résultats sont compatibles avec l'hypothèse selon laquelle le lithium affaiblit les réponses des animaux aux stimulations.     

Behavior and endocrine effects of 3,4,5-trimethoxyamphetamine in male mice

Summary Effects of single doses of 50 and 100 mg/kg of TMA given i.p. were noted in male albino mice after 40 min and 2 1/2 h. Locomotor activity was significantly altered and biochemical tests indicated stimulatory effects on adrenocortical and adrenomedullary functions due to TMA.     

Prelude to dimension theory: The geometrical investigations of Bernard Bolzano

This paper treats Bernard Bolzano's (1781–1848) investigations into a fundamental problem of geometry: the problem of adequately defining the concepts of line (or curve), surface, solid, and continuum. Bolzano's interest in this problem spanned most of his creative lifetime. In this paper a full discussion is given of the philosophical and mathematical motivation of Bolzano's problem as well as his two solutions to the problem. Bolzano's work on this part of geometry is relevant to the history of modern mathematics, because it forms a prelude to the more recent development of topological dimension theory.