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When a part of an image is stabilized on the retina, the part fades to the same colour as its unstabilized surround. The apparent colour of an empty field is therefore assumed to be equal to the colour of its borders. Here, we will show that a similar phenomenon can take place even when the border of a centre field is still visible. A grey square patch with(More)
The mechanisms that produce simultaneous contrast have been thought to depend on retinal gain control and the retina is supposed to send signals to the brain only in terms of local-border contrast (Shapley, 1986). However, it was found that, when an object on a uniform background and border-concealing stimuli are presented to different eyes, the brightness(More)
During the course of the adaptation to left-right reversed vision, visually, evoked potentials (VEPs) were measured for a light flash presented on either side of a fixation. The VEP amplitudes and latencies changed drastically as the adaptation progressed. The time course of the change was quite different between occipital scalp loci. These results indicate(More)
In a tone sequence of continuously ascending frequency or ascending intensity, a tone was occasionally repeated. The repeated tone elicited an anterior negative wave, the latency of which was comparable to the mismatch negativity. However, the amplitude of the negative wave was larger over the left hemisphere than over the right hemisphere. The negative(More)
Graphite surfaces were bombarded with Ne, Ar and Xe ions at 450 eV–1 keV to induce the carbon nanofiber (CNF) growth at room temperature, and the dependence of size and numerical density of ion-induced CNFs on the ion species and ion energy was investigated in detail. The ion-sputtered surfaces were covered with densely distributed conical protrusions and(More)
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