circle
element objects
One or more circles or ellipses. Options for border and solid or transparent fill also allow circular/elliptical frames (rings).
(Transparency artifacts)
In the unusual case that you draw multiple shapes in the same circle element and they overlap and have transparency, (properties color, borderColor below), you need to set backColor = <cds>"opaque"<cds> for accurate display.
▸ 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.
size
color
borderWidth
borderColor
positions
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
size
Default: a circle with diameter 5 deg
A number that is diameter for a circle, or a vector [width height] for an ellipse (deg). Or if you use positions below to show multiple shapes, you can use multiple rows for different sizes.
color
Default: white
A 1×3 RGB vector with numbers between 0–1 setting fill color. You can also use a 1×4 RGBA vector to give the fill transparency, and set A = 0 for no fill. Or if you use positions below to show multiple shapes, you can use an n×3/4 matrix for different colors/transparencies.
borderWidth
borderColor
Default: borderWidth = no border
Default: borderColor = white
borderWidth is a number (deg). 0 = no border. Or if you use positions below to show multiple shapes, you can use a vector for different border widths.
borderColor is a 1×3 RGB vector with numbers between 0–1 setting border color. You can also use a 1×4 RGBA vector to give the border transparency. Or an n×3/4 matrix for different border colors/transparencies for different shapes.
positions
Default: show one shape centered at element position
If you want to show multiple shapes at the same time, you can set that here. This is more efficient than using multiple circle elements. positions is a 2-column matrix setting centers for the shapes, with rows corresponding to shapes and columns to [x y] coordinates (deg). + = right/down and positions are relative to element position, which you can set in position (default relative to screen center). Shapes are also layered front to back in the order you list them.
If you show multiple shapes then for each of the properties above you can set one value for all of them, or different values for different shapes using a vector or matrix (see property).
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
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