The role of premature evidence accumulation in making difficult perceptual decisions under temporal uncertainty.

Paired samples t-tests comparing this pre-evidence CPP build-up between the two conditions (shallow vs steep pre-evidence motion integral) were significant (Amplitude: t(17)=2.41 p=0.03) or close-to-significant (Slope: t(17)=1.92, p=0.07) suggesting that the build-up of the CPP did reflect cumulative motion energy during the foreperiod.

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Specifically, the relationship between RT and pre-evidence CPP amplitude (F(2, 34)=0.12, p=0.89), pre-evidence CPP slope (F(1.45, 24.57)=1.96, p=0.16) and pre-response CPP slope (F(2, 34)=2.08, p=0.14) did not reach statistical significance.

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