https://terminologies.g-node.org/v1.1/terminologies.xml
1.0
2011-01-21
stimulus/grating
Grating
Properties to describe Grating stimuli.
Modality
The stimulus modality like acoustic, haptic, visual etc.
string
Type
The type of grating used. Commonly either Sinewave or Squarewave gratings are used.
string
Duration
The duration of the stimulus in seconds.
floats
TemporalOffset
The temporal offset (with respect to the begin of the recorded trial) with which this stimulus was
presented.
floats
Contrast
The contrast of the grating stimulus.
float
Intensity
The mean intensity of the grating stimulus.
float
GratingType
The type of grating, i.e. 'sinewave' or 'squarewave'.
string
SpatialWavelength
The spatial wavelength of the grating.
float
SpatialFrequency
the spatial frequency of the grating.
float
SpatialExtent
The spatial extend of the presented stimulus (width;height) e.g. (1024;768).
2-tuple
Orientation
The orientation of the grating in degrees.
float
DriftingVelocity
In case of a constantly drifting grating, the velocity
float
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
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