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How does neuropsych even contribute to cognitive psychology

 
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jacks250



Joined: 31 Mar 2007
Posts: 1

PostPosted: Sat Mar 31, 2007 1:04 am    Post subject: How does neuropsych even contribute to cognitive psychology Reply with quote

I don't see the necessity of neuropsychology in cognitive psychology..........it is a study of the mind not the brain! Can someone please explain to me if I'm wrong???
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lash
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Joined: 05 Apr 2003
Posts: 105
Location: Bedford, MA

PostPosted: Mon Apr 02, 2007 5:19 pm    Post subject: Reply with quote

Well, obviously you knew you would get a response saying you were wrong, since cognitive neuropsychology is a huge field. But, just for the sake of understanding, which field are you claiming is a study of the mind and not the brain?
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sociologist



Joined: 31 Oct 2007
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PostPosted: Wed Oct 31, 2007 12:00 pm    Post subject: Reply with quote

I think this is probably a late entry, but... I am a sociologist, and I really think that it's quite often to understand exactly the opposite: how do we need a study of the "mind", as if it were a strange domain between the biological body and the world.
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DrmDoc



Joined: 05 Mar 2007
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PostPosted: Wed Oct 31, 2007 9:03 pm    Post subject: Reply with quote

If I may join with another late entry, the mind is a product of brain function; it is the environment of cognitive activity within the brain that arises from brain function. Whatever ideas or theories we form about the nature of the mind are rendered valid or invalid by the nature of brain function. For example, what defines a mind? Well, from a perspective of brain function, a mind is quantified by a brain's capacity to integrate sensory information--from multiple sources of sensory input (visual, auditory, olfactory, and tactile)--in a way that produces behaviors independent of instinct. Given this perspective, proactive rather than reactive behaviors identify those species capable of the abstract and anticipatory thought processes that quantify a mind. This bit of information, which brain study provides, suggests that the human species is not alone in producing a mind. From a perspective of evolution, the brain began producing a rudimentary mind at the thalamic stage of development, perhaps 360-400 million years ago. Essentially, studying the nature of brain function and its evolution quantifies our perspective of the mind.
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All statements herein are products of my private investigation and assessment of the available evidence. I assume that all who read my statements will pursue further research to determine their validity. --DrmDoc
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Helix



Joined: 11 Oct 2004
Posts: 19
Location: Germany

PostPosted: Tue Jul 22, 2008 12:23 pm    Post subject: Reply with quote

Well, talking about late entries...

DrmDoc's post sounds to me as if it were by any means possible to quantify a brain's capacity to integrate information, which it isn't. What's more, I don't think we know very much about how the brain "integrates" stimuli. Sure, corollary discharge, LTP + adding some vague termes like working memory.... borrowed from.... cognitive psychology? This is just me saying that I don't agree with what seems to me a rather positivistic viewpoint: that we can fully understand mind by reducing it to brain processes, regardless of whether the brain produces mind, is necessary for mind to occur or is synonymuous for mind. For the simple reason that our mind or our brain - make a choice or not - doesn't seem to be constructed as to adopt such a mechanichal view of the workd. So, let's embrace some theoretical pluralism instead of reducing the world so it fits into one's own pockets.
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DrmDoc



Joined: 05 Mar 2007
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PostPosted: Fri Sep 05, 2008 1:03 am    Post subject: Reply with quote

Pardon this late reply to your comments regarding my thoughts on the nature of the mind, which I've only just now noticed. I think anyone who has studied brain evolution as I have understands fully that the mind is a creation of brain function. A mind, empirically, cannot exist or function without the neurological structure evolved to support its processes. We know this as an empirical truth because of the copious amount of data brain research has provided. If we accept the evidence brain study appears to provide, then it is indeed possible to quantify the mind by that evidence.

Do we engage science to maintain the mystery of our nature or to demystify that nature? Although one may desire to remain in the Eden of "theoretical pluralism," eventully I think one must take a step beyond the fanciful onto firmer ground. On firmer ground is the perspective that our brain routinely integrates tactile, aural, visual, oral, and olfactory sensory data to produce the thoughts, emotions, and behavioral responses we engage as a function of our corporeal existence. The types of responses we engage (proactive or reactive) and the parts of the brain that mediate these responses suggest volumes about the nature of our mind. To deny evidence that points to a truth because one desires to cling to one's belief in the grandiosity of a thing is contrary to science, logic, and sound reasoning--in my opinion.
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All statements herein are products of my private investigation and assessment of the available evidence. I assume that all who read my statements will pursue further research to determine their validity. --DrmDoc
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Helix



Joined: 11 Oct 2004
Posts: 19
Location: Germany

PostPosted: Sat Sep 13, 2008 2:43 am    Post subject: Reply with quote

Thank you very much for your reply. It's not that I neglect the findings of neuroscience nor do I deny that our brain is the matter where mind is located. Yet, the part I want to object is that we would know very much about how this happens. For me, it is far to early to be that enthousiastic about ourselves. We lack an overarching framework that integrates all the little pieces researchers have collected. We don't have an answer to fundamental processes for conscious experience to occur, i.e. the binding problem. The rate of false positive and unreplicated findings is huge (take e.g. a look at the lit on the genetics of schizophrenia, where lots of money has been invested in the best of the best).

Actually, I don't agree that the goals of science is to demystify nature and if it was, we would be doing quite bad. If anything, the history of science has taught us that everything is just temporary "evidence", that had wrong premisses in the first place and will be replaced by some new paradigm in the nearby future. What's more, I don't think that there is a Garden Eden of theoretical pluralism. In fact, accepting (as a scientist) that science is all about probabilities und uncertainties, and that your life achievements will be something that future generations will use as an example in their textbooks about how not to do it, is the tougher position. Science then as I understand it is about finding workable solutions for the problems of daily life.

Back to the post by jacks250, neuropsychology has borrowed a lot from cognitive psychology, sure. The other way round, neuropsychology is a tool to prove the hypotheses that cognitive psychology has generated.
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DrmDoc



Joined: 05 Mar 2007
Posts: 66

PostPosted: Sat Sep 13, 2008 10:25 pm    Post subject: Reply with quote

Helix wrote:
If anything, the history of science has taught us that everything is just temporary "evidence", that had wrong premisses in the first place and will be replaced by some new paradigm in the nearby future.


I agree.

Helix wrote:
For me, it is far to early to be that enthousiastic about ourselves. We lack an overarching framework that integrates all the little pieces researchers have collected. We don't have an answer to fundamental processes for conscious experience to occur, i.e. the binding problem. The rate of false positive and unreplicated findings is huge (take e.g. a look at the lit on the genetics of schizophrenia, where lots of money has been invested in the best of the best).


I think a basis for some of these false findings is a lack of foundation in the evolutional development of the brain. In researching how the brain evolved to dream for a book I wrote a couple of years back (Neuropsychology of the Dreaming Brain), I became interested in schizophrenia and the schizophrenic brain because of the similarities between the symptoms of this disorder and the state of normal dream sleep (NDS). Although schizophrenia presents as a conscious malady, both schizophrenia and NDS involve an active brain, hallucinatory states, and a condition of low prefrontal (PF) activation (hypofrontality). A prominent distinction between the schizophrenic and healthy dreaming brain is PF volume density.

In postmortem study, the schizophrenic brain shows evidence of PF atrophy. Brain evolution rightly predicts the cortex to be sensory dependent. Like the musculature of the body, brain tissue fails to sustain or reach optimal volume when not sufficiently stimulated by sensory input. In various studies of decorticate animals beginning in the 1960’s, brain activity was shown to be none existent in the absence of a neural connection to brainstem structure. As my research of brain evolution suggests, PF activation in dream sleep is low because it evolved to become active only in the presence true physical experience. Although other areas of the brain are active when it dreams, our dreaming brain does not identify its dream experiences as materially significant because true physical afferents or sensory input does not accompany dream experiences. When the brain dreams, brainstem function partially subdues input to the forebrain from the physical sensory network of the body. There could be innumerable reason for PF atrophy in schizophrenia; however, the hallucinatory states schizophrenia manifests suggests a possible link to the dream states of the brain as mediated by the brainstem.

In my opinion, too much research into maladies of the mind has been focused either on the forebrain or on our genetic predispositions when much of what evolution suggests is about brainstem function. Evolution suggests our forebrain to be little more than a sophisticated memory storage device which our brainstem uses to attenuate its sensory experiences to produce the behaviors necessary to our objectives or appropriate to our experiences. If some do not have the answer or the framework for all the pieces, it may be that they did not start from the right place with a foundation in how those pieces evolved together.

In another example, I read in an article about an autistic male who explained why he could not look at a person while the person was speaking to him. This articulate fellow explained that he could not process what he sees and hears at the same time. Although the article explored other causes of autism, I believed that the specific cause of his condition was a disorder of his thalamic function. The thalamus was likely the very first structure to function as a brain before ancestral animals reached the stage of cortical structure. As the very first brain, the thalamus, which is currently inclusive of a right and left hemisphere with hemispheric adhesion as cortical structure, would have been the final destination for all sensory information. This structure would likely have given early animals the ability to integrate their sensory experiences. As those experiences grew and these animals became plentiful and more mobile, memory would have become increasingly important to their survival and would ultimately give rise to cortical structure. Contemporarily, the thalamus remains, in my opinion, our primary brain for sensory integration. I welcome your thoughts
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All statements herein are products of my private investigation and assessment of the available evidence. I assume that all who read my statements will pursue further research to determine their validity. --DrmDoc
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