Brain StimulationJune 27, 2015Arman Abrahamyan, Colin W.G. Clifford, Ehsan Arabzadeh et al.
Background: Transcranial magnetic stimulation (TMS) is a popular functional mapping tool in cognitive and sensory neuroscience. While strong TMS typically degrades performance, two recent studies have demonstrated that weak TMS, delivered to visual cortex, can improve performance on simple visual tasks. The improvement was interpreted as the summation of visually-evoked and TMS-elicited...
Although a large proportion of the human brain is dedicated to processing incoming sensory information, much of this processing is not accessible to consciousness. In an effort to understand what differentiates conscious from unconscious processing, we are concerned here with methodological issues in exploring the limits of unconscious processing. We first consider a conscious perceptual...