dave...The two hemispheres of the brain do different things. One side is 'creative', and one side is 'action'. If you simplify this, it can be considered 'think vs. do'.
We don't use both sides at the same time. One side of the brain allows the decision-making to function, and the other side allows the implementation of that process as action. This is one of the main reasons why we need to stop the cue, at the CB, just prior to the final backswing. It allows to brain to "switch" from 'think', to 'do'! This is just part of the eye pattern philosophy that we teach, some of which is based on the evidence from the Quiet Eye Study.
Scott Lee
www.poolknowledge.com
As the above posters mentioned, this information is over-simplified and antiquated. Having said that I don't mean to take away anything from the poster. I hope you really don't believe that you only use one hemisphere at a time (my corpus callosum is offended just thinking about it)! Although this is true of sleeping fish and people with massive hemispherectomies (spelling? too lazy to google.) who only use one, all the time, lol.
To the OP:
"The left eye directly relates to the right hemisphere of the brain - this is the area of the brain which deals with spatial vision."
I'm not sure that this comment really makes any sense either. It is true that the left and right optic nerves cross at the optic chiasm, and information is sent to the ipsilateral (opposite) thalamus (lateral geniculate n.) but even at this level info comes from both sides, and sent further via Meyer's loop to the visual cortex/occipital lobe (back of the brain) for further processing.
This statement doesn't pass the common sense test: can you spatially process information from the right eye?
It would have been better if they would have listed where this information was, b/c I can't find any data from the NIH specific to "advanced pool players". I'm not saying it doesn't exist... but a search should bring it up...
Here is an abstract of the most related article I could find...
Lateralized effects of hand and eye on anticipatory postural adjustments in visually guided aiming movements
Antonia Ypsilantia, Vassilia Hatzitakia and George GrouiosCorresponding Author Contact Information, a, E-mail The Corresponding Author
Laboratory of Motor Control and Learning, Department of Physical Education and Sports Sciences, Aristotle University of Thessaloniki, Thessaloniki 541 24, Greece
Received 17 April 2009;
revised 10 June 2009;
accepted 16 June 2009.
Available online 21 June 2009.
Abstract
This study investigated hemisphere-specific processing of visually aimed movements and associated postural adjustments while controlling for handedness and eyedness. Eleven right-handed, right-eyed and right-footed healthy adult volunteers performed, from a standing position, an aiming task under two hand (right and left hand) and three visual conditions (binocular vision, right and left eye monocular vision). Centre of pressure (CoP) displacement, hand kinematics and the target's position were synchronously recorded during performance of the aiming task. Analysis revealed a lower RMS error, a later postural adjustment onset and a smaller centre of pressure dispersion when aiming was performed with the dominant right compared to the non-dominant left hand. On the other hand, no differences on either aiming performance or postural adjustments were noted under the three visual conditions. These results suggest a strong handedness and absence of an eyedness effect on the accuracy of aiming and associated postural adjustments.
