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