Stimulus competition as a function of varying stimulus meaningfulness

EEG Differentiation Analysis and Stimulus Set Meaningfulness

A set of images can be considered as meaningfully different for an observer if they can be distinguished phenomenally from one another. Each phenomenal difference must be supported by some neurophysiological differences. Differentiation analysis aims to quantify neurophysiological differentiation evoked by a given set of stimuli to assess its meaningfulness to the individual observer. As a proo...

Stimulus Competition by Inhibitory Interference

When two stimuli are present in the receptive field of a V4 neuron, the firing rate response is between the weakest and strongest response elicited by each of the stimuli when presented alone (Reynolds, Chelazzi, & Desimone, 1999). When attention is directed toward the stimulus eliciting the strongest response (the preferred stimulus), the response to the pair is increased, whereas the response...

Mediated stimulus equivalence as a function of the number of converging stimulus items.

3 experiments were performed in which the number of stimuli that converged upon a common response in a paired-associate transfer design was varied. 36 Ss served in each experiment. The number of stimuli systematically varied between the 3 studies (20, 10, and 6) while each study utilized 2 responses. Facilitation, interference, and control conditions were set up in each study by varying the sti...

Two-flash thresholds as a function of comparison stimulus duration.

Advantage of Hole Stimulus in Rivalry Competition

Mounting psychophysical evidence suggests that early visual computations are sensitive to the topological properties of stimuli, such as the determination of whether the object has a hole or not. Previous studies have demonstrated that the hole feature took some advantages during conscious perception. In this study, we investigate whether there exists a privileged processing for hole stimuli du...