Collectively, the preceding findings suggest that visual perception and its regulation by attentional processes, particularly exogenous covert attention, warrants further investigation in ADHD.
Specifically, if individuals with ADHD were highly susceptible to exogenous covert attention, then the effects of attentional manipulation would be greater than the control group.
Here, we used a blocked visuospatial covert attention task in order to investigate any attentional-state dependence of PPC TMS effects upon early visual processing.
Here we demonstrate a possible link between microsaccades and covert attention shifts.
Here, we show that a similar dissociation exists for voluntary shifts in overt and covert attention.
Our results suggest that microsaccades occur because of subliminal activation of the oculomotor system by covert attention.
This highlights the need for a broader theoretical framework incorporating inattentional blindness and overt and covert attention mechanisms.
Voluntary deployments of covert attention have been studied extensively using predictive spatial cueing paradigms [1].
These findings led to the conclusion that covert attention shifts and saccades are subserved by similar neural mechanisms.
This discharge occurred independently of the direction of covert attention during the preceding outward attention epoch (cue location).
The configuration of the 8 positions is similar to that used in previous studies on covert attention [10], [11].
