The participants were instructed to keep their eyes on the fixation point
and to avoid eye movements during the intervention, although this was not monitored in every training session.
The percentage of fixation points
within the both central 2[degrees] and central 4[degrees] were significantly lower in the CSME group than the control group.
On every trial, participants had to carry out one of two different tasks: a) if the fixation point
was an at sign, they had to decide whether the letter was a vowel or a consonant (letter task); b) if the fixation point
was a hash sign, participants had to respond whether the number was odd or even (number task).
Going back to the design, after the words were presented, a fixation point
was presented for 300 msec that signaled the Distractor phase, in which the participants would make the same-different decision.
For each of the four display designs (Figure 1), the target to be searched was presented for 1500 ms, followed by a 2-s presentation of a fixation point
For both humans and monkeys, if a letter or other stimulus appears to the left of a fixation point
for a period faster than the one-fifth of a second needed for the eyes to focus on the stimulus, it enters only the left visual field and gets processed only by the right hemisphere.
Several studies have shown that the mere presence of a number at the fixation point
induces an attentional bias so that smaller numbers facilitate stimuli detection in the left visual side while larger numbers facilitate stimuli detection in the right visual side (e.
In the peripheral condition, the distance between the centre of the letter that served as the fixation point
and the inner edge of the lateralized pictures was 5.
Around the fixation point
, the parafovea extends 10 degrees and the remaining region is the periphery (Rayner & Bertera, 1979).
Floaters will often be seen to follow eye movements but then tend to 'over-shoot' the fixation point
and then gradually fade.
The hexagonal head of the implant allowed the Smartpeg to stay within the same distance to the ABS material, but the fixation point
differed in 5 mm increments between hole locations.
Prior to each new page, a fixation point
appeared on the upper left corner of the screen.