用于视觉研究的机械示波器。

A mechanical oscilloscope for vision research.

作者信息

Molenaar J, Voorhorst R, Schreurs A W, Broekhuyzen P, Nivard J, van de Grind W A

出版信息

Pflugers Arch. 1980 Jan;383(2):173-9. doi: 10.1007/BF00581879.

Abstract

A "mechanical oscilloscope" is described in which a lightbeam (Z-axis) is projected via a single front aluminized moving mirror. The mirror is mounted in a suspension frame allowing the simultaneous rotation about two mutually perpendicular axes. The linear displacements of two loudspeaker-coils are transformed mechanically into mirror rotations and an electronic position/velocity feedback control system is used to drive the loudspeakers. The bandwidth of the resulting X- and Y-axis deflection systems is of the order of 100-200 Hz. The flexibility of Z-axis control (colour, pattern, intensity, etc.) makes this instrument an attractive component of light stimulation systems for psychophysical or electrophysiological studies of vision.

摘要

本文描述了一种“机械示波器”，其中光束（Z轴）通过单个前表面镀铝的移动镜投射。该镜子安装在一个悬挂框架中，允许其同时绕两个相互垂直的轴旋转。两个扬声器线圈的线性位移通过机械方式转换为镜子的旋转，并使用电子位置/速度反馈控制系统来驱动扬声器。由此产生的X轴和Y轴偏转系统的带宽约为100 - 200赫兹。Z轴控制（颜色、图案、强度等）的灵活性使该仪器成为用于视觉心理物理学或电生理学研究的光刺激系统的一个有吸引力的组件。