stimulus/random_dot RandomDot Properties to describe a random dot stimulus. Modality The stimulus modality like acoustic, haptic, light etc. string Duration The duration of the stimulus in seconds. float s TemporalOffset The temporal offset (with respect to the begin of the recorded trial) with which this stimulus was presented. float s Function The function of the described stimulus. E.g. if the white noise constituted the carrier. string OutputChannel The physical output device (e.g. an analog output channel, a monitor screen, the same loudspeaker, etc.). This information can be used to explicitly express that several stimuli (that share the same OutputChannel) are jointly presented. string DotCount The number of random dots placed on the screen. int DotHorizontalExtent The width of a single dot given in °. float DotVerticalExtent The height of a single dot in °. float DotPixelHeight The height of a single dot in pixel. int DotPixelWidth The width of a single dot given in pixel. int DotSize The size of a single dot specified as 2-tuple (width;height). 2-tuple Position The position of the stimulus on e.g the screen. Specified as a 2-tuple (x;y). By default this position refers to the top-left corner of the object or its bounding box. 2-tuple PositionReference [top-left, center, bottom-right] By default stimulus positions are specified by the coordinates of the top-left corner (or of the bounding box). Use this property for other definitions. string SpatialExtent The spatial extend of the presented stimulus (width;height) e.g. (1024;768). 2-tuple