Showing posts with label research. Show all posts
Showing posts with label research. Show all posts

Sunday, April 14, 2013

Covenant

My task is to try and uncover the semi-happy ending that was hidden back at the story’s beginning. Only then, I am told, will I have a chance at creating a real and satisfying resolution. There may be no other way. It’s crucial to get back to the original flash of inspiration .. a time when all plot lines were equally possible ..and remember to read the signs I missed along the way.

Tuesday, January 22, 2013

Peer-mediated buzz

   James Fowler, a professor of psychology at UCSD, found that messages from our peers are more likely to initiate action than messages delivered by a political committee [ link ]. Last year, Obama’s reelection committee learned the same thing. They developed a system that leverages database technology and social-media to deliver their messages. In an instant, this system allows them to:
  1. mobilize grassroots support for White House concerns 
  2. provide White House support for local concerns
Apparently they took an extra step, conducted surveys ..and learned that nothing energizes participation better than ‘reciprocity’. Brilliant use of technology combined with Obama’s experience as a community organizer. Politically I’m independent and pretty damn naïve ..but I can see why this might give Republicans cause for alarm.

Friday, November 25, 2011

Synthesizing minds

At a graduate seminar many years ago, a fellow student named David Stoltenberg proposed a theory that said that the simple act of reading is a “cross-sensory” event in the brain ..he even had a name for it ..“sensory synesthesia” ..which he described as “perceiving the sound of a color ..or the light of a sigh.” He was giving a multi-media presentation to demonstrate this idea ..but it didn’t turn out the way he planned ..the projectors malfunctioned ..the main point got lost ..and what I was able to get out of it left me feeling unconvinced ..it sounded too much like science fiction. When I think back, I realize I owe Dave a big apology ..and a pound of red Lebanese ..he was right ..you have to be able to “hear” what you “see” in order “understand” what you “read”.
Research now shows that synesthesia, far from being a “fringe” phenomenon, can actually enhance cognitive function in addition to being part of the reading process. Many notable artists, poets and novelist are thought to have this ability. The condition occurs from increased communication between sensory areas of the brain [link]. It probably lies on a spectrum of the way we normally perceive and experience the world. In other words, we all have it ..just some more than others [link].

Sunday, November 20, 2011

Calculating minds

Success at math is often more about focusing attention and screening distractions (caused by threat and anxiety) ..than it is about activating areas of the brain actually involved with math calculation. Sian Beilock (University of Chicago) reports: 
“We used functional magnetic resonance imaging to separate anticipatory neural activity from what’s occurring while performing math. Increased activity in frontoparietal regions of the cortex, involved with focusing attention and suppressing anxiety, were better predictors of math scores than activity in regions associated with arithmetic calculation (the left intraparietal sulcus of the cortex) [link].” 
Think about walking across a suspension bridge if you're afraid of heights versus if you're not – it’s a completely different ballgame. This work suggests that educational intervention emphasizing anxiety-reduction (rather than additional math training) will be most effective in revealing a population of mathematically competent individuals, who might otherwise go undiscovered.

Monday, September 19, 2011

anti anxiety

“With the ideal comes the actual 
like two arrows in mid-air ..they meet” ~ Sandokai 
What does this have to say about stress and anxiety ..? The odds of events meeting our ideals are about as likely as two arrows meeting in mid-air. At the local-level, what we think people should do or say is an ideal ..what follows is the actual. Like arrows in mid-air, they seldom meet. At the neural-level, when events don’t meet our expectations, an orienting response is triggered. Pupils dilate ..light intensifies ..sounds get amp’d ..muscle tone increases ..acetylcholine is released .. blood vessels constrict and blood pressure rises ..all in a fraction of an instance. The orienting response is meant to be transitory. It should subside once dissimilarities are found to be non-threatening. But when the incidence of dissimilarity occurs too often, and the orienting response doesn’t get a chance to recover ..it becomes chronic. You experience a constant sense of vigilance both mentally and viscerally, which is similar to what someone with PTSD suffers. It takes a toll. There are many reasons for experiencing a higher incidence of dissimilarity. I have a theory that highlights one possibility: memory becomes scripted with age and repetition [link]. Many of our old views of the world simply don’t match present-day reality anymore. However, we persist. This leads to a false sense of knowing and anticipating what comes next. However, what comes next is never certain ..only imagined. Anticipation-fueled imagination is a vicious cycle that leads to more frequent experiences of dissimilarity between the imagined and the actual. I believe it results in the chronic anxiety and pervasive feeling of dissatisfaction I often see in people my age.

Friday, January 14, 2011

Receptivity

Senator
Russell Pearce

I have a theory. People who rate themselves as highly ‘consistent and uncompromising’ on issues are slower to adapt to the unexpected and less likely to learn from their mistakes. To put it bluntly, “I think inflexibility leads to arrested development”. Roger Shank has a model of speech comprehension that says people only tune-in long enough to retrieve the most likely script from memory. After that, communication becomes a process of listening for information that fills-in the missing pieces. Tom Trabasso says script-based processing is a useful strategy but only when matters are highly predictable ..like listening to a kidnapping story where you can safely narrow your attention to the parts that talk about “what kind of force was used” or “what the kidnapper’s demands are.” My theory says that over-reliance on script-based processing is sort of like Procrustes bed in Greek mythology .. reception becomes limited to what conforms to a standard set of precedents in the listeners head. The rest is quickly dismissed as either immaterial, inconceivable or unacceptable (take for example John Boehner’s “Hell, no!” anti-Obama strategy, or Senator Russell Pearce’s claim that all opposing views are “treasonous”). I talked to Dr Thompson about it. Although he generally considers theories a dime a dozen, he thinks it merits attention and even suggested some ‘assessment tools’ I could use to measure ‘willingness to yield’ on issues. I didn’t think it would be hard getting people to admit to having an uncompromising nature and I have tests that measure how swiftly people handle unexpected events in a narrative. Now I’m interested in getting started and seeing what turns-up in the literature. Perhaps it’s already been done. I mean, you’d think it’d be a factor in Alzheimer’s or something. Considering the political atmosphere around here there’s bound to be some interest in the subject.

Thursday, January 13, 2011

Anti anxiety

Sian Beilock

Writing has been shown to replace ruminating. Ruminating is generally thought of as the mental activity devoted to replaying past traumatic experience. It is a well-known contributor to clinical depression. That’s why writing workshops are often included in the treatment of depression. However, ruminating over future events, such as taking a high-stakes exam or something, can be equally disruptive. In this case, ruminating often leads to “choking” where students perform more poorly than expected given their skill level, especially when there are large incentives for optimal performance and negative consequences for poor performance. University of Chicago Psychologist Sian Beilock has found that the simple act of writing about anxiety can significantly reduce students’ chances of choking, especially if it’s done just prior to test-taking [link]. She says that when students are able to express their fears in writing, they’re given the satisfaction that they’ve dealt with them enough to move on and stop ruminating over them. This, in turn, releases space in working memory ..making it available to work on the task at hand.

Wednesday, December 29, 2010

Reception

In 1998, psychologist Arthur Graesser examined components of speech and reading comprehension in ‘real-time’. See [Einstein’s Dreams]. Components of comprehension include things like ‘unexpected event-handling’ and ‘outcome-resolution’. They are measured in milliseconds. Using an interactive computer-presentation, he recorded the time students spent at each step. Sort of like a reaction-time study. What he found was counter-intuitive. Comprehension scores were actually higher for students who took longer to process unexpected events in a narrative. Students who spent less time had lower scores. On closer examination, he found they were interpreting events way too quickly. Consequently, they were missing the bridge to ‘explanatory’ events presented elsewhere in the narrative. What this tells me is that receptivity is more important than reaching conclusions while listening to someone speak.

Tuesday, December 28, 2010

Academic freedom

The other day students asked me why we waste money on research that doesn’t have immediate medical or commercial value. It was a fair question. I told them I thought it was because progress often depends on research that was originally done for non-commercial purposes ..like scientific advancement. The Internet came to mind. The Internet and all the social networking and businesses it hosts ..did not start out as a texting or commercial enterprise. It was an experiment that relied on research coming out of fields such as cybernetics and neuropsychology. The head of the project was a psychologist from MIT named Joseph Licklider [link]. He was a leading expert on the nature of the auditory system. His research involved understanding the way signals travel across the nervous system and get converted to sound by the auditory centers in the brain. His findings became the basis for ‘packet switching’ in computer networks, without which the Internet would have never progressed much farther than the telephone [link]. These studies were not originally intended for use by the computer industry ..nor were they funded by drug companies. The Internet would have never come about through corporate sponsorship alone. That’s the reason why scientific inquiry needs to be conducted in a neutral setting.

Thursday, December 09, 2010

The advantages of ADD


The kind of focused attention ordinarily required in a classroom is not always helpful overcoming obstacles outside the classroom. A wider focus of attention, which is usually associated with ADD, is actually more adaptive according to neuroscientists John Kounios and Mark Beeman [link]. And from what I’ve seen, I believe it ..! They found that when students are more open to distraction, they do better navigating a computer-simulated labyrinth than when they are focused and blocking out distractions (as seen on an fMRI). Students actually see and hear more .. finding their way faster by heuristic than by analytic reasoning. In other words, in many situations, discovering relationships between vague and loosely connected information is more advantageous than step-by-step analysis.

Thursday, November 18, 2010

Applied neuroscience


Brain surgeon Wilder Penfield [link] found that whenever he tugged at one place in childhood memory, he pulled the rest of childhood experience with it. His patients would report : “I can hear the sound of my mother’s voice calling me for dinner ..I smell the scent of fresh baked bread like I did then ..I see my mother waiting for me on the porch .. I feel her warmth ..I actually feel like I did as a child right now.” Psychologists see the same thing going on with their clients while they’re talking about present-day relationships. For example, when they report talking to somebody who has a voice or manner similar to one of their parents ..it often triggers the feelings they experienced in the presence of that parent. Could be feelings of warmth and pleasure ..or feelings of intimidation and submission. They may pass through these states during the day without even knowing it. What they do remember, however, is a feeling that tells them whether or not they enjoy someone’s company.

My first boss, Tony, was a commanding presence. He looked like a mafia don ..with a deep baritone voice and a quick temper. He shouted at people a lot and often in a disparaging manner. He intimidated my colleagues, which made them cringe in his presence. For some reason his behavior didn’t bother me. I even got a chuckle out of them. I think I figured out why ..and I believe I owe it to Dr Penfield. Although my father didn’t live with us very long, what I remember about him most is that he was gentle and reasonable. He would explain things I did wrong and never scolded. I don’t have memories of growing up with a ‘bully’ like many of my colleagues. Consequently, Tony didn’t evoke the same feelings in me as he did in them. I always figured there was a method to his madness and he always treated me with civility, while my colleagues always felt like they were getting a whipping.

Thursday, September 02, 2010

Working memory


Presented to the
Santa Barbara Institute for Consciousness Studies
It was interesting for me to see a recent study in neuroscience that supports my theory of reading comprehension [link] Bear with me while I try and explain (or you can duck out now and I won’t be offended). What they found is that working memory interacts with the senses in order to produce a stable view of our surroundings and reduce errors of perception. For one thing, it has to identify signals that are the result of actual sensory events and filter out extraneous signals that are produced by fluctuations inside the nervous system itself (like those caused by changes in activity levels, neurotransmitter concentrations, circadian rhythms, etc..). Neuroscientists refer to this as the ‘sensory orientation’ function [link]. The visual areas in the brain must distinguish changes in actual sensory events from changes in internal activity in order to follow the ‘genuine’ action. They claim that the brain makes this estimate based on principles of ‘Bayesian inference’, which are not much different than principles of ‘Pragmatic inference’. It works something like this: Incoming signals that are considered likely to occur, based on the contents of working memory, are given a boost. Signals considered less likely are held in abeyance and immediately suppressed if subsequent events don’t do anything to rehabilitate them.