Unicorn

Understanding how we aim
Eye-hand coordination in goal-directed aiming.
Binsted G1, Chua R, Helsen W, Elliott D.
Author information

Abstract
In a number of studies, we have demonstrated that the spatial-temporal coupling of eye and hand movements is optimal for the pickup of visual information about the position of the hand and the target late in the hand's trajectory. Several experiments designed to examine temporal coupling have shown that the eyes arrive at the target area concurrently with the hand achieving peak acceleration. Between the time the hand reached peak velocity and the end of the movement, increased variability in the position of the shoulder and the elbow was accompanied by a decreased spatial variability in the hand. Presumably, this reduction in variability was due to the use of retinal and extra-retinal information about the relative positions of the eye, hand and target. However, the hand does not appear to be a slave to the eye. For example, we have been able to decouple eye movements and hand movements using Müller-Lyer configurations as targets. Predictable bias, found in primary and corrective saccadic eye movements, was not found for hand movements, if on-line visual information about the target was available during aiming. That is, the hand remained accurate even when the eye had a tendency to undershoot or overshoot the target position. However, biases of the hand were evident, at least in the initial portion of an aiming movement, when vision of the target was removed and vision of the hand remained. These findings accent the versatility of human motor control and have implications for current models of visual processing and limb control.

WTF? :s

I thought this would be a worthy topic so I found this ....I have no idea what it means but posted it anyway 'cos I know there's plenty of geniuses here...

I'll keep digging Guests cannot see images in the messages. Please register at the forum by clicking here to see images.
Dorian
Son of Merlin

Caerleon - Wales

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My father Merlin, once told me that "You should end up pointing to what you were aiming at when you've released the Dart."




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my head hurts!
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Me too I'm just gonna chuck 'em instead Guests cannot see images in the messages. Please register at the forum by clicking here to see images.
Dorian
Son of Merlin

Caerleon - Wales

(Mission "KURO" M4 rear taper design- 23GmYellow Kite Shape Flights 100 micron & Solid Brass Stems)

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My father Merlin, once told me that "You should end up pointing to what you were aiming at when you've released the Dart."




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Not got a clue what all that means - I'm with Bobby George in the "look at what you are throwing at and throw what you are looking at" school of thinking lol
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Wow I just barely got me first cup of coffee and no way can I get through this but yea, it makes sense. Something like look, throw, grab another dart and do it at the next spot
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Get back to posting jokes Dorian! That's your specialty. Lol!

We are not used to this type of articles!
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:faint:
made no sense to me either!
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ahhhhhhh...is it okay to blink now?
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(08-08-2015, 08:55 AM)Getagrip Wrote: my head hurts!
My eyes hurt!
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I'll give it a stab.... First a bit of background:

There are two schools of thought about how we throw and hit a target. One school says that throwing is a "closed loop" exercise. That means that as we throw, we sense feedback from our eyes and arms and adjust in real time so that the throw hits the target.

The second school of thought is that throwing is an "open loop" exercise. Once we give the arm the command to throw, there are no corrections possible.

To explain closed loop, imagine you control the temperature in a room with a temp sensor. If too hot, you decrease heating. If too cold, you increase heating.

Open loop control would be that you set the heater on say "4" and leave it. It does not adjust heat from that position, it just puts out "4" whatever that may be.....

What is being said appears to be that aiming/throwing is a matter of open loop control.

Phil Taylor seems to agree.... he says that the throw starts at pullback, and finishes on extension - he makes this one chunk of motion, not two separate parts. Adrian Lewis with his blind 180 shots would also agree.

How does this matter to us?

If throwing breaks down into one big chunk of pull and push or even just push, there is no such thing as finessing a dart. Once Phil Taylor begins to pull back that dart, ( or Lewis starts to push it ) they are committed to the entire shot. Any sort of finesse is going to fail, because that sort of thing happens too late.....
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I felt the draught as that went right over my head.
I was expecting a Dorian joke too LOL
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Yes, I like this. Big E made a decent summarisation. I reckon that the Long & Short of it is that your throw happens in the Sub-Conscience... You look with your eye, once your eye connects with intended target as soon as that arm comes back you're committed, no turning back with-out causing a Schism in your Throwing action of catastrophic proportions.

This is where Rhythm & Muscle memory take a leading role in the Throwing action.... If you're not putting the Hard yards into this then subsequently your Sub-conscience is unprepared to deal with the task at hand, the Open Loop is compromised.
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