Why do you think this? We all agree that different cues have different feel. What makes you think that it is the contact time IN PARTICULAR that makes the difference in what you feel? Why that and NOT efficiency (for example)?
Thank you kindly.
I could ask you the same question in reverse.
Why do you, or anybody else, think that is not the case?
You asked me what I "thought" and I told you.
I "think" that "I" can "feel" the difference in the time.
If there was no "feel" involved, then there wouldn't be a cue trading market, or different tips, etc., etc., etc.
My background is in "communications", FWIW, and I feel that people "communicate" with their cue (and some cues don't listen...LOL). The more you can "feel" what is happening with your cue, the more you are able to determine what is "right" and what is "wrong" when you hit a ball.
I have known car mechanics who could put their hand on the hood of your car and tell you if it wasn't running properly because of the vibration.
Believe it or not...I believe it.
I can't control what anybody else believes.
Aloha
http://www.eatonhand.com/hw/facts.htm
Hand and Brain
"About a quarter of the motor cortex in the human brain (the part of the brain which controls all movement in the body) is devoted to the muscles of the hands. This is usually illustrated with a drawing of a human figure draped over the side of the brain, body parts sized proportional to the amount of brain devoted to their movement, referred to as a homunculus - as illustrated in this drawing from Dr. Wilder Penfield's monograph "The Cerebral Cortex of Man.":
Fingernail feeling
"Do fingernails have feeling? No, but the fingernail extends deep beneath and behind the skin of the cuticle, and nerves on the back of the finger around the cuticle sense forces transmitted from the tip of the fingernail. The brain integrates the sensations from the nerves of both the fingertip pad and cuticle to give a complex enhanced perception of pressure and shear at the fingertips. Loss of a fingernail changes the feeling on the palm side of the fingertip."
http://www.isciencetimes.com/articl...human-touch-new-research-suggests-fingers.htm
"This means that, if your finger was the size of the Earth, you could feel the difference between houses from cars," Mark Rutland, Professor of Surface Chemistry at the institute and one of the authors of the new study on human touch, said in a press release. "That is one of the most enjoyable aspects of this research. We discovered that a human being can feel a bump corresponding to the size of a very large molecule."
http://www.science20.com/news_articles/sense_touch_uses_vibrations_just_hearing-98781
Researchers have known for years that these afferents respond to skin vibrations, but they studied their responses using so-called sinusoidal waves, which are smooth, repetitive patterns. These perfectly uniform vibrations can be produced in a lab, but the kinds of vibrations produced in the skin by touching surfaces in the real world are messy and erratic.
For this study, Bensmaia and his team used a vibratory motor that can produce any complex vibration they want. In the first experiment, they recorded afferent responses to a variety of frequencies in rhesus macaques, whose tactile nervous system closely resembles humans. In the second part, a group of human subjects reported how similar or different two particular frequencies felt when a probe attached to the motor touched their skin.
When the team analyzed the data recorded from the rhesus macaques, they found that not only did the nerve oscillate at the frequency of the vibrations, but they could also predict how the human subjects would perceive vibrations based on the neuronal responses to the same frequencies in the macaques.
"In this paper, we showed that the timing of spikes evoked by naturalistic vibrations matters, not just for artificial stimuli in the lab," Bensmaia said. "It's actually true for the kinds of stimuli that you would experience in everyday life."
What this means is that given a certain texture, we know the frequency of vibrations it will produce in the skin, and subsequently in the nerve.
In other words, if you knew the frequency of silk as your finger passes over it, you could reproduce the feeling by stimulating the nerves with that same frequency without ever touching the fabric.
But this study is just part of ongoing research for Bensmaia's team on how humans incorporate our sense of touch into more sophisticated concepts like texture, shape, and motion.
http://www.science20.com/news_articles/sense_touch_uses_vibrations_just_hearing-98781
Researchers could someday use this model of timing and frequency of afferent responses to simulate the sensation of texture for an amputee by "replaying" the vibrations produced in an artificial limb as it explores a textured surface by electrically stimulating the nerve at the corresponding frequencies. It could also be used for haptic rendering, or producing the tactile feel of a virtual object on a touchscreen (think turning your iPad into a device for reading Braille, or controlling robotic surgery).
"We're trying to build a theory of what makes things feel the way they feel," Bensmaia said. "This is the beginning of a story that's really going to change the way people think about the somatosensory system."
https://books.google.com/books?id=g...epage&q=can the hand timing vibration&f=false
