Brains


On Philosophy of Mind and Related Matters
Brains

4th Online Consciousness Conference

has now officially begun and will run until March 2nd. Stop by http://consciousnessonline.com to get in on the action!

The Overflow Cup Runneth Over

[cross-posted at Philosophy Sucks!]

There has been a lot of action on the overflow front lately! It started with papers by Ned Block and Dennett and Cohen in Trends in Cognitive Science (Block's paper criticized, among others, my recent paper on this stuff). These articles spawned a response by me here and here, which I still stand by. But now, having read the response from Kouider (which echoes his response given at his CUNY Cogsci talk) as well as the response from Overgaard and Block's response to both of them in addition to Lamme's response to Cohen and Dennett and their response in turn, it seems a couple points should be emphasized. 

Accessed vs. Accessible 
Block again and again says that his argument does not depend on inaccessible consciousness but rather on it being necessary that at any given moment there is some consciousness that is not accessed (but could be accessed at a different moment and so is not inaccessible tout court). There seem to me to be several issues worth considering here. First is that there is a conceptual question about what it means to say that something is accessible but not accessed. One might think that you cannot know that something is accessible without it actually being accessed. Block and others respond that something is accessible when, roughly, it is globally broadcast. But then we might wonder why we ought to think that being globally broadcast is equivalent to being accessible. Aren't their mental contents/states that are globally broadcast but which are not accessible? David Rosenthal has pressed this kind of question in conversation and I am not exactly sure what the neuropsychological answer is in this case. Is there any serious neuropsychological reason to think that global broadcasting is equivalent to being accessible? Second one might worry about the 'thin edge of the wedge' implications of Block's argument. If we can show that there is consciousness that is not accessed then it seems a short step to consciousness that is inaccessible in principle. And if it is true that there is a principled connection between the two then though it would be strictly speaking true that Block's argument did not rely on inaccessible consciousness it would none the less still be appropriate to give a reductio of his argued for view in terms of absurdities in the view it leads to. Finally, it does seem as though there is a principled connection between the two notions. Block argues that it is inappropriate to argue against the claim that there is inaccessible consciousness because he only requires that some consciousness not be accessed not inaccessible. But if one thinks just of a particular moment in consciousness leaving aside the next moment it is of course true that some consciousness is inaccessible. It is inaccessible at that moment. Block's view is that at any given moment in your daily conscious experience there is, necessarily, some parts of your conscious experience that are inaccessible at that moment. Given these considerations I don't think that the appeal to the distinction between not accessed and inaccessible helps make Block's case.
 
Kouider's Data Count Against His Own View? 
Block has said several times that Kouider's own data counts against the no-overflow view. He says in his latest response,
According to the hypothesis Kouider et al. put forward, what is in consciousness before the cue are generic representations plus specific representations that are too sparse to provide the information necessary to explain partial report superiority. However, on their hypothesis one would expect a substantial error rate concerning the uncued items. However, Kouider et al. found the error rate to be small: their own evidence counts against them.
It really is not clear to me why Block thinks that one would expect a substantial error rate concerning the uncued items. He seems to be thinking that the no-overflow view is committed to only generic phenomenology before the cue but this is clearly not the case. It is compatible with the no overflow view that there is some specific phenomenology before the cue (just not all of the items as per overflow). But even if one is not moved by this there is an obvious problem with the argument. The no overflow position maintains that there is enough information unconsciously processed to do the task. Subjects don't make a lot of errors because that information was there whether consciously or not. 
 
Falsifiability vs. Support by the Evidence 
I think that Block is right that we do not want falsifiability as a=our standard here and that we need to evaluate theories holistically based on the widest swath of available evidence and theories available to us. Block thinks that there is some evidence that the kinds of unconscious processes necessary to sustain the no overflow view aren't there. But this evidence is very weak and the jury is still out on this issue. In general the science is all over the place on this issue. There is partial evidence on both sides and no theory comes out on top on the basis of current scientific evidence alone. Hopefully this will change in the nearish future but at this point this is where it is. Given this one might think that we should be agnostic about whether overflow is true or not but this doesn't seem right to me. The overflow hypothesis is radical in that it postulates a kind of consciousness that cannot in principle be accessed (at that moment) and yet which is also for me in the way that normal accessed consciousness is for me. That is, I experience the unaccessed consciousness as mine without being aware that I do. How this could be so is deeply mysterious and perhaps in principle untestable with any known scientific methods. Barring prejudice in its favor we would need strong evidence indeed to accept such a notion.

For those going to the Central APA next week

Here is an interesting session organized by David Anderson: 

 

FRIDAY, February 17, 3-6pm  (at the Palmer House, Chicago)

 

SESSION ON "Machine Consciousness" (Sponsored by the APA Committee on Computers and Philosophy)

 

Chair: David Leech Anderson (Illinois State University)

3:00 Ned Block (New York University), "Can thinking about machines help us understand consciousness?"

3:35  Peter Boltuc (University of Illinois at Springfield), "Non-reductive machine consciousness"

4:10  Terry Horgan (University of Arizona) "The Real Moral of the Chinese

Room: Understanding Requires Understanding-Phenomenology"

4:45 Robert Van Gulick (Syracuse University), "Humans and other conscious machines - one way or many?"

 

Explaining Cartesian Consciousness

[cross-posted at Philosophy Sucks!]

In his classic paper “Two Concepts of Consciousness” David Rosenthal says “…if consciousness is essential to mentality no informative, nontrivial explanation of consciousness is possible” (2005 p 22). The claim is, roughly, that if all mental states are conscious and if there are no mental states that can occur unconsciously, then we cannot explain what makes a mental state conscious. But this assumes a certain way of characterizing the claim that all mental states are consciousness.

In a really excellent paper that just came out in Philosophers’ Imprint by Allison Simmons, Cartesian Consciousness Reconsidered, she argues that Descartes’ can understand consciousness as a kind of self-representation and can account for ‘unconscious’ mental states by appealing to gradations of consciousness and what she calls ‘phenomenal confusion’. I think she makes an excellent case that a Cartesian picture of the mind can go a long way towards providing an explanation of conscious and (seeming) unconscious states.

Yet even so, I think we can see that the initial claim made by Rosenthal is still true in a sense. The Cartesian moves made by Simmons all rely on a prior account of mentality. That is, the Cartesian explanation given relies on a prior understanding of sensations (as having objects as their ‘objective reality’, which we would translate as ‘having representational content’) and explains consciousness in terms of a thought having as it objective reality a first-order state (i.e. consciousness is the representation of our first-order states). In fact Simmons seems to make much the same point in her paper. If we interpret Descartes as claiming that thoughts and consciousness are identical then we will not be able to explain it. But, as she shows, this is not something that a Cartesian is committed to. So even if one is attracted to the view that all mental states are conscious one doesn’t need to give up on an explanation of what consciousness is.

Scientist on the Science of the Self

Brainers may be interested to know about the new blog of Steve Fleming on the science of the self: The Elusive Self 

New Philosophers' Carnival

Here.

Is the mind is a Turing machine? How could we tell?

I have just finished writing a draft of paper on Turing machines being equivalent (or not) to human minds. This is an expanded (but still quite brief in many respects) version of my talk from the last year's Studia Logica conference on Church's Thesis. I defend the mechanist account of implementation of computation, and show that it can be used to make sense of Fodor's 1968 distinction between the weak and strong equivalence of computer simulations to their explanatory targets. I think some of the cross-talk in discussions concerning the multiple realization is due to conflating these two kinds of equivalence.

The paper is available here, and all comments are welcome. It is one of the papers that I started writing when working on my book Explaining the Computational Mind (the draft is available here).

Budapest Semester in Cognitive Science

If you have undergraduate students looking for an interesting study abroad experience that will keep them on track in their philosophy, psychology, computer science, or cognitive science major, please point them towards the Budapest Semester in Cognitive Science (http://www.bscs-us.org/).

It is a really good program, and has had regular participation from scholars doing interesting research in cognitive science and the philosophy of mind, such as Colin Allen, John Bickle, Ron Chrisley, Carl Craver, Peter Erdi, and George Kampis.

The official program announcement is below.  If you or your students have any questions about the program, please contact me (tony.chemero@fandm.edu) or the program office at bscs@bscs-us.org.

Cheers,

Tony Chemero

US Director of BSCS

——

The BUDAPEST SEMESTER IN COGNITIVE SCIENCE (BSCS, website: www.bscs-us.org), our Hungarian study abroad program that may be of interest to undergraduate students in Cognitive Science and other disciplines.

BSCS, established in 2003 focuses on cognitive science from an interdisciplinary perspective and offers credit-earning courses in neuroscience, psychology, philosophy, linguistics, biology, and computer science; as well as continuous and optional intensive Hungarian language courses. The program is complemented by an optional independent research module tailored to students' curricula and research interests.

BSCS is hosted by the Department of History and Philosophy of Science at Eotvos Lorand University (ELTE), Hungary's premium science university established in 1635 and serving as a centre of excellence for modern higher education. A world-class new campus has been added to the premises of ELTE, built on the scenic banks of the Danube and hosting the Faculties of Natural and Social Sciences and Informatics, where BSCS courses are held.

Budapest provides an excellent and highly inspiring setting and our vibrant metropolis is a hub of a wide range of interdisciplinary studies and research; boasting a bustling Central European experience with a growing English-speaking academic community. Furthermore, the city serves as a gateway to Vienna, Prague and other major attractions of the region.

The application deadline for the Fall 2012 semester is April 15.

Visit our website for more detailed information (www.bscs-us.org).  Email inquiries to bscs@bscs-us.org, or to Tony Chemero, US Director, tony.chemero@fandm.edu.

successful vs. unsuccessful psychopaths

Bill Hirstein and I have just submitted a paper to the SPP on the criminal culpability of successful vs. unsuccessful psychopaths, and I'm hoping to generate a bit of discussion on the distinction.

Gao and Raine recently published a review of studies distinguishing the two populations within five types of samples: a community recruited sample, individuals from temporary employment agencies, college students, psychopaths employed in business and industry, and psychopathic serial killers (Gao and Raine 2010). Studies suggest that unsuccessful psychopaths have reduced prefrontal and amygdala volumes and hippocampal abnormalities, resulting in reduced executive functioning, including impaired decision-making. Unsuccessful psychopaths also exhibit impaired autonomic/somatic markers and fear-conditioning deficits which contribute to poor and risky decision-making. In contrast, successful psychopaths do not show similar structural and functional impairments of the prefrontal cortex, amygdala and hippocampus. They seem to have intact autonomic function and possibly enhanced executive functioning when compared with normals. Gao and Raine hypothesize that successful psychopaths may have superior cognitive empathy (the ability to understand another’s perspective) without emotional empathy (feeling empathetic emotions).

Our hypothesis is that unsuccessful
psychopaths’ deficiencies in executive processing may be severe enough to constitute evidence of diminished mental capacity. Many successful psychopaths, on the other hand, seem to have a healthy enough executive profile to correct for their lack of emotional empathy. In philosophical terms, they could have done otherwise
. Like a colorblind driver, or a high-functioning autistic person, successful psychopaths would seem to have the ability to take note of their emotional/cognitive lack and make up for it so as to avoid violating the law. If an offender is capable of (knowingly) following a law, she is responsible when she does not.

I'd be happy to hear any comments on this line of thought, and to pass along the whole paper to anyone interested.

Templeton Foundation Open Submission--Starting Soon!

As part of its spring open submission cycle, the John Templeton Foundation welcomes online funding inquiries in the areas of philosophy and theology.  The submission window is February 1 to April 16, 2012.  Proposed philosophical projects need not have religion or theology as a focus.  To submit an online funding inquiry, please visit www.templeton.org/what-we-fund/our-grantmaking-process.  

Please note that the Templeton Foundation does not normally provide dissertation fellowships through this open submission process.  For more information on the kinds of projects that the Foundation can support, visit www.templeton.org/what-we-fund/core-funding-areas/science-and-the-big-questions.

A list of Foundation grants in the areas of philosophy and theology can be found here: http://www.templeton.org/what-we-fund/grant-search/results/taxonomy:5.

Recent Posts

  1. A Job at SUNY at Buffalo
    Tuesday, May 29, 2012
  2. Consciousness Science: A Science of What?
    Tuesday, May 22, 2012
  3. Philosophy and Computation - Online Workshop
    Friday, May 11, 2012
  4. A Profession-Wide Invitation
    Friday, May 11, 2012
  5. The Emperor Cometh
    Monday, May 07, 2012
  6. The Man Behind the Legend
    Wednesday, May 02, 2012
  7. New Philosophers' Carnival
    Monday, April 23, 2012
  8. looking for some help from ya'll
    Sunday, April 22, 2012
  9. i-Comment (and you can, too!)
    Tuesday, April 17, 2012
  10. Experiment Month is Back
    Wednesday, April 11, 2012

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