5. Comments
5.1 Author's Own
In experiment one, could the observed attentional
modulation be based on eye position or eye movements? Since the same
stimulus was used for both conditions for example, could a difference in eye
positions affect neural responses by changing the stimulus to the
retina? The median offset in all eye positions was 0.15o and 0.10o
for experiments one and two respectively. According to the authors, such
small offsets cannot account for the observed effects! 5.2 My Personal
Comments
The experiments were conducted with two subjects only.
Although it is a very difficult, time consuming and very expensive process to
carry out such studies, can conclusions be drawn by using such a small
number of subjects? Furthermore, despite the large number of cells
residing in the areas MT and MST, only 96 (86 after excluded 7) neurons
examined. Once again, can conclusions be drawn from such a small sample
of neurons? Finally, the experiments were conducted using very controlled
stimulus. What if more than two stimuli were included in experiment two or what
if more distracter stimuli were added?
