An accrual model for primed digit classification.
This article describes a chronometric experiment of digit classification with masked primes. EEG experiments have shown that the subliminal prime activates the cortex prior to the target signal, thusly modifying the response: Congruent primes lead to faster correct answers, while incongruent primes result in slower response. It is noticed that incorrect answers show an inverted effect: A congruent prime inhibits incorrect answers, and the reverse for incongruent primes. Within the evidence accrual paradigm, it is suggested that the prime activity in the motor cortex effectively behaves as a shift in the decision threshold. This model assumption is consistent with our experimental findings. The correct and incorrect answers and the error percentage are discussed.
Izquierdo
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Universidad Nacional de General Sarmiento, Buenos Aires, Argentina.
Saal
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D000328:Adult; D000704:Analysis of Variance; D001244:Association; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D008433:Mathematics; D008960:Models, Psychological; D010364:Pattern Recognition, Visual / Q000502:physiology; D010470:Perceptual Masking / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology; D017603:Signal Detection, Psychological; D055815:Young Adult