September 13, 2024
Berit Brogaard, Dimitria Electra Gatzia
Abstract This chapter presents findings indicating that psilocybin-induced visual distortions and impaired executive functioning originate in temporary disruptions of attentional mechanisms. It then revisits a predictive processing account of neural processing and argues that this lacks the resources to provide a unified model of the perceptual mechanisms underpinning psychedelic experiences...
Frontiers in Psychology
May 23, 2017
Berit Brogaard, Dimitria Electra Gatzia
80 citations
Traditionally, philosophers have appealed to the phenomenological similarity between visual experience and visual imagery to support the hypothesis that there is significant overlap between the perceptual and imaginative domains. The current evidence, however, is inconclusive: while evidence from transcranial brain stimulation seems to support this conclusion, neurophysiological evidence from...
May 8, 2017
Robert W. Kentridge, Berit Brogaard
2 citations
This chapter considers some implications of broad principles of the neural architecture and neural coding of information in the visual system. J. H Reynolds and R. Desimone suggest that attentional shrinkage of receptive fields around attended objects serves to solve the binding problem. Attention serves to optimise the veridicality of responses of cells involved in coding complex properties of...
Frontiers in Neuroscience
September 7, 2016
Berit Brogaard, Dimitria Electra Gatzia
9 citations
OPINION article Front. Neurosci., 07 September 2016Sec. Neuroprosthetics Volume 10 - 2016 | https://doi.org/10.3389/fnins.2016.00395
Advances in Consciousness Research
June 17, 2015
Berit Brogaard
20 citations
The most central metaphysical question about phenomenal consciousness is that of what constitutes phenomenal consciousness, whereas the most central epistemic question about consciousness is that of whether science can eventually provide an explanation of the phenomenon. Many philosophers have argued that science doesn’t have the means to answer the question of what consciousness is (the...
Consciousness and Cognition
March 1, 2015
Berit Brogaard
37 citations
Blindsight is a kind of residual vision found in people with lesions to V1. Subjects with blindsight typically report no visual awareness, but they are nonetheless able to make above-chance guesses about the shape, location, color and movement of visual stimuli presented to them in their blind field. A different kind of blindsight, sometimes called type 2 blindsight, is a kind of residual...
Frontiers in Human Neuroscience
2013
Berit Brogaard
46 citations
Though synesthesia research has seen a huge growth in recent decades, and tremendous progress has been made in terms of understanding the mechanism and cause of synesthesia, we are still left mostly in the dark when it comes to the mechanistic commonalities (if any) among developmental, acquired and drug-induced synesthesia. We know that many forms of synesthesia involve aberrant structural or...
Cognitive Science
August 1, 2011
Berit Brogaard
59 citations
David Milner and Melvyn Goodale's dissociation hypothesis is commonly taken to state that there are two functionally specialized cortical streams of visual processing originating in striate (V1) cortex: a dorsal, action-related "unconscious" stream and a ventral, perception-related "conscious" stream. As Milner and Goodale acknowledge, findings from blindsight studies suggest a more...