Abstract: A game or play facilities which change contents of progress of the game or play based on physiological information of a player, thereby being capable of providing contents suitable for the player. The game or play facilities is controlled by physiological information and includes physiological signal measuring device for measuring a physiological signal of a player, mental state determination means for determining mental state of the player by comparing the physiological signal subsequently to appropriate conversion thereof with reference values, and control means with reference values, and a control device determination by the mental state determination device.

Abstract: A radiation detector includes a detection element having a single crystal silicon substrate with an impurity concentration of less than 1.times.10.sup.14 cm.sup.-3, a metal layer formed on one surface of the substrate to form a surface barrier therebetween and an electrode layer mounted on the opposite surface of the substrate. Between the metal layer and electrode layer there is not applied a bias.