Expts 3 & 4 were analogous form color VEP desaturation series, using the appearance of the square spiral stimulus of Figure 1b, with either red or blue form stimuli (nominal saturation 100 %, 80 %, 60 %, 40 %, 20 %, 0th the grey comparison stimulus again set at 46 cd/m2.
This allowed us to leave 175 ms of silence between both the onset and offset of the auditory stimuli and the spiral data acquisition time to prevent auditory masking.
Their spiral expansion stimulus may come nearest to our coherent flow stimulus of the localizer, which combined 3D flow with a circular planar component, and their 9-subfield stimulus to our random motion stimulus, even though our random stimulus was certainly even less coherent.
The stimulus reversed the death spiral of 850,000 jobs a month we were losing, and by the time the stimulus wore off we were creating more than 100,000 jobs per month.
As distinct from the obvious effects of surface color desaturation on the second order waveforms generated by an individual participant, color desaturation for the appearance of the square spiral form stimulus affects the waveforms to a lesser degree, for both red and blue desaturation sequences.
The combination of low growth and low inflation perfectly illustrates why the ECB needs to be more aggressive with its stimulus measures lest disinflation spirals into crushing deflation.
"I'm optimistic that cooler heads will prevail," Marston says, addressing the consequences of the fiscal stimulus before the deficit spirals out of control.
Wall and Smith (2008) showed that CSv responded more to a spiral expansion motion stimulus compared with a panel of 9 smaller versions of the same stimulus, while controlling for attention using a central fixation task, similar to our study.
Together with the Bush Administration's seven-hundred-billion-dollar bailout of the banking system and large-scale emergency lending by the Fed, the stimulus helped prevent a downward spiral of layoffs, bankruptcies, and foreclosures of the sort that ravaged the country during the early nineteen-thirties.
The spiral angles and stimulus velocities of the two rival targets were equal in magnitude but opposite in direction for the carrier and mask; further details on the stimuli and procedures are provided in the methods section.
