Topic: visual cortical area V4

The precise relationship between cortical activity in the sensory areas and perception remains elusive. The perception of a given sensory stimulus can vary depending on the state of ongoing neural activity. Previous electroencephalogram (EEG) studies in humans have demonstrated distinctions in the power and phase angle of alpha oscillations (8-12 Hz) in the occipital region just before the stimulus onset between successfully detected (hits) and undetected (miss) trials (Busch et al., 2009; Dugué et al., 2011). Additionally, electrical microstimulation of V4 has shown to enhance performance in