mask
element objects
A rectangular, elliptical, or Gaussian aperture. By default this is a transparent hole in a solid surround, where the surround is the trial background color and fills the experiment window. The hole is centered at element position which you can set in property position (default window center). Generally place a mask element on top of other elements—the easiest way to do this is to set property depth = <cd>+1<cd> for the element(s) to occlude and leave it at default 0 for the mask (more generally depth for the mask < depth for the other elements).
▸ Object ends on its own?
"Ends on its own" means ends automatically at that point. If an element can end on its own, you don't need to set end conditions for it in property end (unless you want it to maybe end earlier).
No—runs until any condition you set in property end.
shape
size
sigma
backSize
color
All visual elements
position
depth
nn_eyes
rotation
flipHorz
flipVert
colorMask
alpha
intensity
contrastMult
convolution
shader
filterOrder
filterGrayscale
filterResolutionMult
filterGamma
channelResolution
backColor
addDisplay
All visual elements
position
All adjuster elements have
adjust
All response handler elements
translateResponse
scoreResponse
correctResponse
scoreResponseForStaircase
maxNumResponses
recordDefaultResponse
registerTrigger
autoResponse
autoResponseLatency
All elements
start
end
startBuffer
endBuffer
vary
staircase
All objects
report
info
shape
Default: rectangle
A string <cds>"rectangle"<cds>, <cds>"circle"<cds>, or <cds>"gaussian"<cds> setting shape of the aperture.
size
Default: 4.5 deg
Size of the transparent aperture for a rectangular or circular mask (deg). This is a number that is square side length or circle diameter. Or a vector [width height] for a rectangle or ellipse.
sigma
Default: 0.75 deg
Standard deviation of the transparent aperture for a Gaussian mask (deg). Or a vector <cd>[s_x s_y]<cd> for an asymmetric Gaussian.
backSize
Default: fill experiment window
Size of the solid surround part of the mask (deg). Generally this just needs to be big enough that the element(s) to occlude are fully occluded. Typically you can just leave it at default <cd>inf<cd> = fill screen (at any position or rotation, not necessarily centered on screen). If you set it, it can be a number that is side length for a square, or a vector [width height] for a rectangle (deg).
color
Default: same as trial background color
A 1×3 RGB vector with numbers between 0–1 that is surround color. Default is same as trial background color, which you can set in trial object backColor (default black).
Adjustable properties
You can vary or allow the subject to adjust the following properties of an object of this type when it's running. If you need to make other properties adjustable, you can edit the element type code—see Element Type Programming Manual.
Adjustable properties
Adjustable properties
nn_eyes
rotation
colorMask
alpha
intensity
contrastMult
position
nn_eyes
rotation
colorMask
alpha
intensity
contrastMult
drawCodeVars
(None)
(None)
PsychBench uses record properties to record information during experiments. You can't set record properties but you can see them in experiment results using input property report.
All response handler elements
response
responseScore
responseTime
responseLatency
d_responseTime
numResponses
All elements
startTime
endTime
duration
n_startFrame
n_endFrame
startLatencyBufferable
endLatencyBufferable