(Warning: neuroscience weeds) This is an interesting study getting attention on social media: Does the Prefrontal Cortex Play an Essential Role in Consciousness? Insights from Intracranial Electrical Stimulation of the Human Brain. Ned Block is one of the authors. (Warning: paywalled, but you might have luck here.) The study looks at data from epileptic patients … Continue reading Stimulating the prefrontal cortex
(Warning: neuroscience weeds) Stanislas Dehaene recently called attention to a paper in Nature studying the brain dynamics of something becoming conscious. The study supports the global neuronal workspace theory that consciousness involves "bifurcation" dynamics, an "ignition", a phase transition between preconscious and conscious processing. Prior to the transition, the processing is feedforward and fleeting. After … Continue reading The global playground
(Warning: neuroscience weeds) I've discussed global workspace theories (GWT) before, the idea that consciousness is content making it into a global workspace available to a vast array of specialty processes. More specifically, through a neural competitive process, the content excites key hub areas, which then broadcast it to the rest of the specialty systems throughout … Continue reading The location of the global workspace
Global workspace theory (GWT) is the proposition that consciousness is composed of contents broadcast throughout the brain. Various specialty processes compete for the limited capacity of the broadcasting mechanisms, to have their content broadcast to the all the other specialty processes. Global neuronal workspace (GNW) is a variant of that theory, popularly promoted by Stanislas … Continue reading Is there a conscious perception finish line?
Back in March, I did a post on a proposed Templeton Foundation project to test major scientific theories of consciousness. The idea was to start with a head to head competition between the integration information theory (IIT) and global workspace theory (GWT). Apparently that project got funded and, according to a Science Magazine article, there … Continue reading A competition between integration and workspace
I just finished reading Stanislas Dehaene's Consciousness and the Brain. Dehaene is a French psychologist and cognitive neuroscientist who is bullish on the idea of consciousness being something that can be scientifically investigated. It's an interesting book, one that I recommend for anyone interested in the science of consciousness. Dehaene accomplishes his scientific investigation by … Continue reading Dehaene’s global neuronal workspace theory