fixationGrid

 element objects

A grid of concentric circles and diagonal lines intended to stabilize fixation. As used in Tyler, C.W. et al. (2005). Extended Concepts of Occipital Retinotopy.

▸ 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.

Input properties
Record properties
fixationGrid
elements (see below)

size
innerRadius
radiusIncrement
lineWidth
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 elements
start
end

startBuffer
endBuffer

vary
staircase

All objects
report
info

size

Default: fill screen

Square size of the grid (deg). This determines how many circles you see and the length of the diagonal lines. <cd>inf<cd> = fill screen (at any position you set in property position, not necessarily centered on screen).

innerRadius

Default: 1 deg

Radius of innermost circle (deg)

radiusIncrement

Default: 6 deg

Distance between concentric outer circles (deg).

lineWidth

Default: 0.05 deg

Line width (deg).

color

Default: 50% gray

A 1×3 RGB vector with numbers between 0–1.

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)

Input properties
Record properties

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.

fixationGrid
elements (see below)

All elements
startTime
endTime
duration
n_startFrame
n_endFrame
startLatencyBufferable
endLatencyBufferable