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Illusion - Is Seeing Really Believing?
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Illusion - Is Seeing Really Believing (1998)(Marshall Media)[Mac-PC].iso
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hub_fie.cxt
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00104_Field_frep86.txt
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1996-12-30
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693b
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24 lines
The optimal stimulus for an
end-stopped cell is a line that
extends for a certain distance
and no further. For a cell that
responds to edges and is end
stopped at one end only, a
corner is ideal; for a cell that
responds to slits or black bars
and is stopped at both ends, the
optimum stimulus is a short
white or black line or a line
that curves so that it is
appropriate in the activating
region and inappropriate--
different by 20 to 30 degrees or
more--in the flanking regions,
as shown in the diagram of the
curved contour to the left. We
can thus view end-stopped cells
as sensitive to corners, to
curvature, or to sudden breaks
in lines.