Exact(9)
Observers then held their gaze on the landing line during the response period and only re-oriented towards the centre with the start of a new trial.
Motor explicit (mEXP) – observers fixated centrally and then saccaded to an explicitly defined (dot) target which appeared on the landing line.
In the perceptual (p) conditions observers maintained fixation throughout the trial and indicated by button press whether a probe was offset CW or ACW relative to a target on the landing line (explicit or extrapolated) during the response period.
Perceptual extrapolated (pEXT) – observers maintained central fixation throughout and judged whether a probe was offset clockwise (CW) or anti-clockwise (ACW) relative to a spatial location on the landing line defined by a pointer (the extrapolated target).
Following a variable delay period [a stimulus onset asynchrony (SOA) of 900, 1100, 1300, 1500 or 1700 ms] the entire stimulus was presented for 500 ms; this was then followed by a variable response period (2700 ms – SOA for that particular trial) during which the fixation point and landing line alone remained onscreen, i.e. the spokes and pointer were extinguished.
Hence, the overall trial duration was always 3200 ms. In the motor (m) conditions observers were instructed to fixate initially and then saccade to a position on the landing line [explicitly defined by the presence of a target (EXP condition), or defined by the extrapolation of a pointer (EXT condition)] following stimulus onset.
Similar(50)
No land line works.
There is no land line.
We no longer have a land line.
They plan to install a land line.
"Don't answer the land line is my advice.
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