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Full-Text Articles in Cognitive Psychology
Timing Differences: The Modality Effect And Filled Interval Illusion With Rats And Pigeons, Andrew Miki
Timing Differences: The Modality Effect And Filled Interval Illusion With Rats And Pigeons, Andrew Miki
Theses and Dissertations (Comprehensive)
The theoretical implications of the Scalar Timing Theory (STT) and the Mixed Memory Model were used as a paradigm to investigate the effects of stimulus properties on the psychological representation of time. Experiment 1 failed to demonstrate a Modality Effect in two sets of psychophysical tests using filled and empty intervals. Experiment 2 provided no evidence for a Filled Interval Illusion but the results from the acquisition phase and psychophysical tests indicated that, on some trials, rats forgot the presentation of the first marker of an empty interval. In Experiment 3, an Empty Interval Illusion was reliably demonstrated in three …
Temporal Response Of The Human Visual System To Suprathreshold Luminance And Opponent Colour Contrast Gratings, Melanie Bucking
Temporal Response Of The Human Visual System To Suprathreshold Luminance And Opponent Colour Contrast Gratings, Melanie Bucking
Theses and Dissertations (Comprehensive)
The goal of the present study was to characterize the temporal processing of both suprathreshold luminance and opponent-colour defined contrast in the human visual system. We used a detection task in five experiments; following a 900 Hz, 2-cycle tone, observers were presented with a sinusoidal grating stimulus. The interval separating the waming tone and the presentation of the grating was manipulated to determine the influences of attentional dwell time in a cross-modal task. This theory states that the first of two successive events will interfere with the processing of the second event. In all four luminance experiments the gratings were …
Errors In Pigeons' Memory For Number: Effects Of Iti And Di Illumination, Christopher W. Hope
Errors In Pigeons' Memory For Number: Effects Of Iti And Di Illumination, Christopher W. Hope
Theses and Dissertations (Comprehensive)
In Experiment 1 all pigeons were trained to discriminate 2 flashes of hopper light in 4 sec from 8 flashes in 4 sec, at a 0 sec delay. One group of pigeons experienced dark lTl’s (Group Dark) while the other experienced an illuminated lTl (Group Light). All birds were then tested with dark delays of 0, 5, 10, 15, and 20 sec. Analysis showed a significant bias to respond to the comparison correct for small at extended delays, with no difference between groups. In Experiment 2 training was identical to that in Experiment l except that a 5 sec baseline …