Friday, July 11, 2008

Professor Dan Arieley author of "Predictably Irrational"

The Thinker, Artist's rendering of the sculptu...Image via WikipediaProfessor Dan Ariley
is the Alfred P. Sloan Professor of Behavioral Economics at MIT, where he holds a joint appointment between MIT's Media Laboratory and the Sloan School of Management. He is also a researcher at the Federal Reserve Bank of Boston and a visiting professor at Duke University. Ariely wrote this book while he was a fellow at the Institute for Advance Study at Princeton.
presented a talk at Google about his book "Predictably Irrational: The Hidden Forces That Shape Our Decisions." His main thesis refutes the original assumption that humans are "Homo Economus" i.e. rational human beings who always act in their best interest and who always try to maximize their profits. A youtube description of his talk:
In a series of illuminating, often surprising experiments, MIT behavioral economist Dan Ariely refutes the common assumption that we behave in fundamentally rational ways. Blending everyday experience with groundbreaking research, Ariely explains how expectations, emotions, social norms, and other invisible, seemingly illogical forces skew our reasoning abilities. Not only do we make astonishingly simple mistakes every day, but we make the same types of mistakes, Ariely discovers. We consistently overpay, underestimate, and procrastinate. We fail to understand the profound effects of our emotions on what we want, and we overvalue what we already own. Yet these misguided behaviors are neither random nor senseless. They're systematic and predictable—making us predictably irrational.
and the video
His work in the area of behavioral finance continues the work started by Amos Nathan Tversky, who was a cognitive and mathmatical psychologists. He worked very closely with Daniel Kahnemann a Noble Prize winning researcher to show conclusively about the hidden biases in the human decision making process. Their findings in the area of behavioral finance question the assumption of human beings acting totally in a rational manner.

The picture that emerges out of these findings portrays us more like "rationalizing beings" rather then "rational beings" or we could say that we use reason and logic as tools to create new knowledge but the process that leads to rational self consistent knowledge is not rational itself.

These findings of human behavior as non-rational are also being supported by the work in the area of Cognitive, Affective and behavioral Neuroscience.
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Tuesday, July 08, 2008

Right Brain Left Brain Functions

Animated Brain. The brain is divided into the ...Image via WikipediaThe brain consists of two halves connected through the nerve bundles called Corpus Callosum. Both sides of brain work together to help us in creating a comprehensive picture of the world we experience. The brain works through modules that are specialized to perform specific functions. The right side of the brain is holistic and works through the entire pattern. The left side of the brain is analytic and acts as an interpreter of the experience.

The strong evidence to support this came from the studies of split brain patients. These patients were suffering from acute seizures and to stop the seizure from spreading to the entire brain the best course was to split the two halves of the brain through brain surgery.

The surgery was successful as anticipated in reducing the brain seizures but had some side effects. These patients were subjected to many scientific studies to see the effect of the surgery on their brain functioning by pioneering neuroscientist Dr. Michael Gazzaniga. Here is a video where Dr. Gazzaniga is interviewing a split brain patient:



The video clearly shows that the patient despite appearing completely normal has lost some of his ability to relate and interpret external items. Also, it shows how the left side brain acts as a interpreter and creates a story even if the story does not support the facts.
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Monday, June 30, 2008

Brain Rules by Dr. John Medina

Glasgow MuseumImage via Wikipedia"Brain Rules" is a book by molecular biologist Dr. John Medina, who is also a blogger. He gave an interview to Harvard Business review on "The Science of Thinking Smarter".

Dr. Medina uses his expertise and experience he has acquired over the years from his research work in molecular biology dealing with brain's functioning to formulate 12 cardinal rules to succeed in work, school and at home . The rules are:
EXERCISE | Rule #1: Exercise boosts brain power.
Evolution SURVIVAL | Rule #2: The human brain evolved, too.
WIRING | Rule #3: Every brain is wired differently.
ATTENTION | Rule #4: We don't pay attention to boring things.
SHORT-TERM MEMORY | Rule #5: Repeat to remember.
LONG-TERM MEMORY | Rule #6: Remember to repeat.
SLEEP | Rule #7: Sleep well, think well.
STRESS | Rule #8: Stressed brains don't learn the same way.
SENSORY INTEGRATION | Rule #9: Stimulate more of the senses.
VISION | Rule #10: Vision trumps all other senses.
GENDER
| Rule #11: Male and female brains are different.
EXPLORATION | Rule #12: We are powerful and natural explorers.
These rules reinforce the existing common sense rules of good living like exercising, sleeping well and reducing the stress. Some of these rules can act as guidelines for developing successful elearning modules like rule#10.

Here is a beautiful slide presentation emphasizing these rules.

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Sunday, June 08, 2008

Ayahusaca, Consciousness and adventure in jungle of Peru

This articles titled Peru:Hell and Back appeared in National Geographic magazine in the adventure section, deals with the use of psychoactive drug Ayahuasca in Shamanistic practices of tribes living deep in the jungle of Peru.

The author of the article took a trip to Peru and participated in a ceremony that involved ingestion of Ayahausca in a ceremonial setting that lasted several days under the guidance of an experienced Shaman from Peru. Here are some of the quotes from the article describing the experience of the author during the trance state induced by the ingestion of ayahausa
For centuries, Amazonian shamans have used ayahuasca as a window into the soul. The sacrament, they claim, can cure any illness. The author joins in this ancient ritual and finds the worlds within more terrifying—and enlightening—than ever imagined.

Here the author describes her experience using the metaphor of time travel
Now I'm traveling to a realm where I meet my various incarnations from past lives. We are connected to a large wheel; whenever fear energy leaves the top of my head in puffs of dark smoke, it leaves their heads at the same time. Our lives, it seems, are interconnected and dependent. Outside of linear time, all our lifetimes, all our many incarnations, occur simultaneously. "Past life" is really a misnomer; "other life" seems a more accurate way of describing it.

More on the author experience while in trance
All at once, I willed myself to rise. I sailed up through the tunnel of fire, higher and higher until I broke through to a white light. All darkness immediately vanished. My body felt light, at peace. I floated among a beautiful spread of colors and patterns. Slowly my ayahuasca vision faded. I returned to my body, to where I lay in the hut, insects calling from the jungle.

and her recovery from severe depression that she suffered since her childhood
The next morning, I discovered the impossible: The severe depression that had ruled my life since childhood had miraculously vanished.
Here the author goes into the differences between the world views of the western analytic thought processes and the ancient mystical symbolic understanding of the Universe:
And this notion of a spiritual experience marks the very juncture where Western science and analytic thought depart on the subject of ayahuasca and where indigenous culture and mysticism come in. Most ayahuasca researchers agree that, curiously, the compound appears to affect people on three different levels—the physical, psychological, and spiritual—complicating efforts to definitively catalog its effects, let alone explain specific therapeutic benefits. Says Ralph Metzner, psychologist, ayahuasca researcher, and editor of the book Sacred Vine of Spirits, "[Healing with ayahuasca] presumes a completely different understanding of illness and medicine than what we are accustomed to in the West. But even from the point of view of Western medicine and psychotherapy it is clear that remarkable physical healings and resolutions of psychological difficulties can occur with this medicine."
Here is her final thoughts
Me, I'm ready to go home. I sit up with difficulty, as if waking from decades of sleep. It would be easier for me to call it all a dream, a grand hallucination. Then I could have my old world back, in which I thought I knew what was real and unreal, true and untrue. Now the problem is, I don't know anything.
The Shaman practices for inner mental development are designed to show that we can construct a different reality from the same sensory inputs by making our neurons to process the same sensory data differently by influencing the processing abilities of neurons through the use of psychoactive drugs.

These experiments and the scientific experiments with visual illusions where scientists have created pictures that our brain can not process coherently raises a serious issue. That is how much we should actually rely on our senses to find the truth or how much we should really trust the world view constructed based upon our sensory perceptions and experiences.

The physical senses helps us orient ourselves in the world. They helps us navigate through the spatial-temporal space without running into other objects. Also, to identify and avoid dangerous objects. They are definitely an aid without which we can not survive but they also create a phantasm through over active imagination caused by incessant firing of neurons within the brain that do not have any existence in the reality.

This experimentation with Ayahusaca proves that the brain created reality that is also referred to as imagination of minds is a constructed reality and there are several possible constructions of the same reality depending upon how the neurons are conditions or modified to process this sensory input.

In the final analysis it is up to us on how much weight we should assign to this our own brain constructed reality that can very easily be changed by ingesting some psychoactive drug or through other means such as intense religious practices of fasting or meditation involving breathing practices.

Also, no theory of consciousness and mind will be complete unless it provides a satisfactory explanation for the experiences of brain in the altered states.

The article has a small video of the ceremony and the complete article is here

Disclaimer: This article in no way and form is endorsing the use of drugs to achieve altered state of minds. The information provided in this post is for informational purposes only.
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Sunday, May 18, 2008

Cognitive Neuroscience of Mindfulness Meditation

Meditation has shown to bring contentment to its practitioners. Here is a talk at Google that talks about mindfulness and meditation.

Mindfulness meditation, one type of meditation technique, has been shown to enhance emotional awareness and psychological flexibility as well as induce well

Friday, May 16, 2008

Emotion, Arousal, Attention and Flow

Chaining Emotional States to Improve Human Computer Interaction

An overview of how designing for emotion relates to UX and flow, how the appearance and interaction of products communicate a personality to the user, and how emotions can be "chained" to enhance persuasion and influence behaviour.


This slide show lays down the ground work for designing user interfaces that provide an emotional user experience. It has been known for a while that learning process requires learner to be in an aroused state but very little attention has been paid on how to design digital user interfaces that are emotionally arousing and gratifying. The role of flow as suggested by Mihály Csíkszentmihályi in learning process need more consideration. There is a complete article in Psychology Today describing "Flow" experience.

At this point there are very few guidelines on how to design virtual learning spaces those provide a learning experience that is emotionally gratifying and creates optimal learning conditions by creating a state of flow within the learner.

Monday, May 12, 2008

More from BBC special series "Century of Self"

More from the BBC series titled "Century of Self" that explores the use of Freud's discovery of human subconscious and its applications in Psychoanalysis, opinion formation and mass persuasion etc.

Part 2 http://video.yahoo.com/watch/517293/2692016

Part 3 http://video.yahoo.com/watch/517142/2691530

Part 4
http://video.google.com/videoplay?docid=1122532358497501036&q=bbc%20century&hl=en

This video series throws light on the irrational side of the humans and how it can be used to shape their behavior.

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