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This is speculative but I want to give some thoughts on how to improve athletic response times and some other things where a tenth of a second makes a difference. I can observe a phenomenon and I suspect you can observe it too if you do this experiment. It requires you to be sitting still in a place where you can see clouds drifting visually past some still object such as trees or utility poles. The poles should be about thirty yards away and the clouds should be drifting quickly directly across them. Sit quietly without moving for a minute and watch the sharp edge of a cumulus cloud drift behind the pole and reappear on the other side.

Watch carefully and you will see that the cloud doesn’t move smoothly but noticeably speeds up and slows down. It is impossible for a cloud to behave that way, and therefore it must be your perception of velocity and of time that is creating the phenomenon.

I have performed this experiment many times sitting in my living room and have realized that the speeding up and slowing down of the clouds is synchronized with my pulse. My pulse rate is usually about fifty-five beats per minute and that gives me ample time to see the phenomenon. Standard 35mm movies are shot at a rate of 24 frames per second (fps) because if they are run at a slower rate most people perceive a flickering effect. Some modern movies are shot at 48 fps and a few even faster.

My point is that the variation of the speed of the moving clouds is well within our ability to see if you have a fixed foreground reference point.

There may be a use for this knowledge. If our brain speeds up and slows down a perceptible amount, as I have observed, and the pulse can be monitored with an EKG machine, or a pressure detector as in a home blood pressure testing cuff, then it would be possible to gain an advantage over competitors in computer gaming situations. There may be a tenth of a second, and possibly a fifth of a second advantage if the stimulus of an event could be linked to the pulse. It has been observed that a human can react more quickly to a sound, like a starting gunshot that begins a foot race, than a visual flash. Apparently, this is because the brain has fewer operations to do between the stimulus and the signal to the body to react.

Although the variation of the speed of a moving cloud has been observed in the visual system the timing for initiating events for an action could be timed to the heart pulse and given as an auditory signal.

Response times triggered to within a heartbeat could gain a winning advantage.