 |
|
New study suggests the brain predicts what eyes in motion will see
August 26, 2009Findings in Journal of Vision article suggest the experience of moving our eyes occurs before our eyes actually move
Rockville, MD - When the eyes move, objects in the line of sight suddenly jump to a different place on the retina, but the mind perceives the scene as stable and continuous. A new study reports that the brain predicts the consequences of eye movement even before the eyes take in a new scene.
The study, "Looking ahead: The perceived direction of gaze shifts before the eyes move," published in the Association for Research in Vision and Ophthalmology's peer-reviewed Journal of Vision, asked subjects to shift their eyes to a clock with a fast-moving hand and report the time on the clock when their eyes landed on it. The average reported time was 39 milliseconds before the actual time. As a control task, the clock moved instead of the eyes, and the reported arrival times averaged 27 milliseconds after the actual time.
"We've revealed a moment in time when things are not perceived as they actually are," said lead researcher Amelia Hunt, PhD, of the University of Aberdeen's School of Psychology. "These findings serve as a reminder that every aspect of our experience is constructed by our brains."
The report suggests that the prediction is a result of remapping, where neurons involved in visual perception become active or dormant to help the brain maintain a stable visual environment despite the constant shift of images on the retina.
According to the report, "Remapping allows locations to be continuously represented across the eye movement by maintaining both current and expected locations simultaneously, facilitating the transition between the two." Hunt added: "The finding implies that we experience the predicted consequence of an eye movement as though it is actually occurring, albeit just for a moment."
Hunt said the research might lead to more investigation of the brain's ability to predict and its role in perception, as well as the link between brain activity and actual experience. The next step may be to examine under what circumstances predictive processes occur, what function they serve and to what degree they influence our perception of events, she said.
Association for Research in Vision and Ophthalmology
"We've revealed a moment in time when things are not perceived as they actually are," said lead researcher Amelia Hunt, PhD, of the University of Aberdeen's School of Psychology. "These findings serve as a reminder that every aspect of our experience is constructed by our brains."
The report suggests that the prediction is a result of remapping, where neurons involved in visual perception become active or dormant to help the brain maintain a stable visual environment despite the constant shift of images on the retina.
According to the report, "Remapping allows locations to be continuously represented across the eye movement by maintaining both current and expected locations simultaneously, facilitating the transition between the two." Hunt added: "The finding implies that we experience the predicted consequence of an eye movement as though it is actually occurring, albeit just for a moment."
Hunt said the research might lead to more investigation of the brain's ability to predict and its role in perception, as well as the link between brain activity and actual experience. The next step may be to examine under what circumstances predictive processes occur, what function they serve and to what degree they influence our perception of events, she said.
Association for Research in Vision and Ophthalmology
Eye Movement Current Events and Eye Movement News RSSAlcoholism's effect on sleep persists during long periods of sobriety
A study in the Oct.1 issue of the journal Sleep shows that long-term alcoholism affects sleep even after long periods of abstinence, and the pattern of this effect is similar in both men and women.
First human gene implicated in regulating length of human sleep
Scientists have discovered the first gene involved in regulating the optimal length of human sleep, offering a window into a key aspect of slumber, an enigmatic phenomenon that is critical to human physical and mental health.
Sleep apnea occurring during REM sleep is significantly associated with type 2 diabetes
A multi-ethnic study in the June 15 issue of the Journal of Clinical Sleep Medicine reports that there is a statistically significant relationship between obstructive sleep apnea (OSA) episodes occurring during rapid eye movement (REM) sleep and type 2 diabetes.
Naps with rapid eye movement sleep increase receptiveness to positive emotion
Naps with rapid eye movement (REM) sleep refresh the brain's empathetic sensitivity for evaluating human emotions by decreasing a negative bias and amplifying recognition of positive emotions.
Rutgers Research: Discoveries Shed New Light on How the Brain Processes What the Eye Sees
Researchers at the Center for Molecular and Behavioral Neuroscience (CMBN) at Rutgers University in Newark have identified the need to develop a new framework for understanding "perceptual stability" and how we see the world with their discovery that visual input obtained during eye movements is being processed by the brain but blocked from awareness.
LSUHSC research shows fish oil protects against diseases like Parkinson's
Dr. Nicolas Bazan, Director of the Neuroscience Center of Excellence, Boyd Professor, and Ernest C. and Yvette C. Villere Chair of Retinal Degenerative Diseases Research at LSU Health Sciences Center New Orleans, will present new research findings showing that an omega three fatty acid in the diet protects brain cells by preventing the misfolding of a protein resulting from a gene mutation in neurodegenerative diseases like Parkinson's and Huntington's.
New way to analyze sleep disorders
Sleep is such an essential part of human existence that we spend about a third of our lives doing it -- some more successfully than others.
Baby's first dreams
After about seven months growing in the womb, a human fetus spends most of its time asleep. Its brain cycles back and forth between the frenzied activity of rapid eye movement (REM) sleep and the quiet resting state of non-REM sleep.
Queen's expands testing for fetal alcohol syndrome
Improved technology, partnerships and collaboration across two provinces have allowed Queen's University scientists to dramatically expand the use of eye-movement tests that help identify and assess children with Fetal Alcohol Spectrum Disorder (FASD).
Underlying sleep problem linked to attention-deficit/hyperactivity disorder in children
A study in the March 1 issue of the journal SLEEP suggests the presence of an intrinsic sleep problem specific to attention-deficit/hyperactivity disorder (ADHD) and supports the idea that children with ADHD may be chronically sleep deprived and have abnormal REM sleep.
More Eye Movement Current Events and Eye Movement News Articles
 |
Eye Movement Desensitization and Reprocessing (EMDR): Basic Principles, Protocols, and Procedures, 2nd Edition by Francine Shapiro (Author) This volume provides the definitive guide to Eye Movement Desensitization and Reprocessing (EMDR), the psychotherapeutic approach developed by Francine Shapiro. EMDR is one of the most widely investigated treatments for posttraumatic stress disorder, and many other applications are also being explored. To keep up with this growing body of knowledge, the second edition has been revised to incorporate current neurobiological data, findings from controlled clinical studies, and literature on emerging clinical applications. Chapters provide background on EMDR's development, theoretical constructs, and possible underlying mechanisms, and present updated protocols and procedures for working with adults and children with a range of presenting problems. Among the many clinical populations for... |
 |
Rapid Eye Movement by Riverside Poland's Riverside are undoubtedly THE buzz band of the current progressive rock scene. Their dark, moody, atmospheric sound - which has been compared to both Pink Floyd and Porcupine Tree - is mixed with modern metal elements to create something both unique and authentic. Fans and critics alike warmly embraced their last CD, Second Life Syndrome with gusto and enthusiasm, and tours with bands such as Dream Theater have helped to launch what is certain to be a long and productive career. The initial version of Rapid Eye Movement will be limited to 4000 units. It will be housed in digipack format and will feature 3 bonus tracks. The band are currently looking at touring possibilities for North America this autumn, stay tuned... |
|
Journal of Eye Movement Desensitization & Reprocessing Pract by Springer Publishing Co | |
 |
The Neurology of Eye Movements: Book-and-DVD Package (Contemporary Neurology Series, 70) by R. John Leigh M.D. (Author), David S. Zee M.D. (Author) This new edition of Neurology of Eye Movements is a major revision providing clinicians with a synthesis of current and new scientific information that can be applied to the diagnosis and treatment of disorders of ocular motility. Basic scientists will also benefit from descriptions of how data from anatomic, electrophysiologic, pharmacologic, and imaging studies can be directly applied to the study of disease. By critically reviewing such basic studies, Drs. Leigh and Zee build a conceptual framework that can be applied to the interpretation of abnormal ocular motor behavior at the bedside. These syntheses are summarized in boxes, figures, schematics, and tables. Insights and techniques from current research, case examples, bedside and laboratory studies, and thousands of references are... |
 |
Light of My Eyes (Luce dei miei Occhi) Starring: Silvio Orlando, Sandra Ceccarelli, Toni Bertorelli, Barbara Valente, Luigi Lo Cascio Directed By: Giuseppe Piccioni Antonio is a fallen angel, a rootless chauffeur in Rome, who relates only to the lonely heroes in the pulp science fiction novels he grew up with. Only through a chance encounter with Maria, a woman struggling to hold onto her daughter and her business, does he discover a hope that's been lacking in his detached existence. Antonio is drawn into the suffering of Maria's world, where she draws her inner strength from her fragile solitude. A haunting score, poetic atmosphere and award-winning lyrical performances by the two leads evoke the beauty of a precarious existence. |
 |
Rapid eye movement Riverside (Primary Contributor) |
 |
Musical Movements - Plays "Eyes Of Texas" (Set of 2) by Sankyo Manufactured by Sankyo, the world's leading producer of musical movements, this sturdy 18 note movement is the most widely used type of musical movement placed in craft, hobby, gift and novelty projects. The mechanism on this movement is encased in a white plastic shell that can be removed if you wish. The movement with shell measures 2- 1/8"L x 1- 7/8" W x 1- 1/16"H. When fully wound it plays approximately 2-1/2 minutes. It has 18 notes to provide a nice range of tones. It winds from the bottom and a gold colored 23/32"L winding key is provided. This offer is for two Musical Movements that play "Eyes Of Texas". |
|
A Time For Justice: America's Civil Rights Movement Also With: Charles Guggenheim (Producer) | |
 |
Music Movement - Irish Eyes by PriceCutter 18 note musical movements. Includes spring loaded brass rod stopper and t bar turn key. |
 |
Tommy Bahama Relax Men's Beach Cruiser Chronograph Polyurethane Strap Watch #RLX1064 by Tommy Bahama Quartz movement, Chronograph, Polished silver-tone hands, numbers and markers with luminous accents, Black numbers, markers and indices, Brushed silver-tone numbers, markers and indices, Brushed black resin unidirectional bezel engraved with white numbers, markers and indices, Polished/brushed silver-tone stainless steel case and caseback, Polished silver-tone stainless steel crown and selector buttons, 100 meters/330 feet water resistant |
| © 2009 BrightSurf.com |