
BJMB! ! ! ! ! ! ! ! !!!!!!!!Research Notes!
Brazilian(Journal(of(Motor(Behavior(
(
https://doi.org/10.20338/bjmb.v16i5.300
with that of the expert. Fourth, QET continues until all five QE characteristics (QE location,
QE onset, QE critical movement, QE offset, QE duration) have been mastered under a
variety of practice and play conditions.
The goal of QET is to shift attention away from trying to control specific muscle
groups during the stroke to a QE focus that uses a sequence of eye movements not
reported before in QET studies. Golfers who suffer from the YIPS are overinvested in their
physical/ biomechanical technique and often fail to read the green properly and develop an
aiming strategy that is effective
17
. As a consequence during QET there is limited emphasis
on the physical, technical aspects of putting and instead emphasis on visual and cognitive
skills needed to successfully aim for accuracy. Two phases of the putt were emphasized -
an aiming phase and a QE phase. During the aiming phase the golfer assumes their
stance and places the putter face as close to the back of the ball as possible. Fixations are
used on the green to determine a specific target location where the ball will be aimed. Two
targets exist in putting, a location on the hole on straight putts, and on sloping greens a
location where the ball is expected to roll toward the hole. Through a process of pattern
recognition and decision making an aim line is established between the target location, the
back of the ball and the middle of putter face. Most putters have a line inscribed on the
centre of the putter and golfers often mark a centre line on the ball. This aiming process
establishes the location, direction, and distance to the target. The QE phase begins about
a second before the backswing and begins once the line between the centre of the putter,
the centre back of the ball and target has been refined and committed to memory. During
the stroke the QE is held stable on the back of the ball during the backswing, foreswing,
contact, and on the green under the ball as the club follows through toward the intended
target, resulting in a total QE period of two to three seconds. This means the only thing the
golfer focuses on as the stroke is performed is perfecting the contact between the centre
club face and the centre back of the ball. The stroke is therefore performed with cognitive
information pertinent to aiming accuracy held in memory. Studies that have assessed both
the QE and club movement show that misses occur when golfers have a shorter QE
duration, resulting in poor club-ball contact, while those with a longer duration QE exhibit
stable acceleration and increased accuracy
12
.
QE and EEG of The QET and Control Groups
At the outset alleviating two YIPS characteristics was proposed. The first was to
re-direct the attention of the QET group away from thoughts about physical technique to a
QET routine that establishes a precise aim line to the target that takes into account
meaningful aiming conditions on the green. A secondary goal is to determine if the QET
group establishes a neural network that differs from that of the Control group. Biological
neural networks were first described by Hebb
18
as occurring “when an axon of cell A is
near enough to excite a cell B and repeatedly or persistently takes part in firing it, some
growth process or metabolic change takes place in one or both cells such that A's
efficiency, as one of the cells firing B, is increased’ (p. 62). Shat (p. 64) caught the essence
of this neural event in the famous rhyme: “what fires together, wires together”
19
.
The past ten years has resulted in studies seeking to determine how specific areas
of the brain lead to increased accuracy in aiming sports
20,21,22
. Of importance in the current
proposal is a novel study by Chueh, Lu
23
in which four neural networks (Fθ, FCα, SMR,
T3a) were investigated during successful (61%) and unsuccessful putts (39%) performed