Researchers show that eye vergence influences visual attention
The new study provides new data around attention and visual perception.
The journal PLOS ONE has recently published a study which provides new data around attention and visual perception. The article "A role of eye vergence in covert attention" was authored by researchers from the Institute for Brain, Cognition and Behaviour (IR3C) the University of Barcelona.
Even if the neural mechanism that produces visual attention is not clearly known, certain trends in perceptual and neural responses have been observed in the absence of eye movements. The study describes the relation between fixational eye movements which take part in fixation, so-named eye vergence, and covert attention. Visual stimuli modulate vergence movements (the angle of eye vergence) to catch attention. This illustrates the relation between eye vergence and bottom-up attention. In visual and auditory cue/no-cue paradigms, the angle of vergence is greater in the cue condition than in the no-cue condition. According to reseachers, this shows a top-down attention component.
Therefore, the study proves that there is a close link between covert attention and modulation in eye vergence during eye fixation. It suggests a basis for the use of eye vergence as a tool for measuring attention and may provide new insights into attention and perceptual disorders.
Among the applications of the study, researchers address the diagnosis of the attention deficit hyperactivity disorder (ADHD) in children and adults. ADHD is a chronic disorder which occurs in 3-6 % of children, and in more than 50% of the cases it continues in adulthood. A correct diagnosis is necessary to receive an effective treatment in which parents and teachers help the child to develop his or her potential. Diagnosis is possible thanks to the clinical data got from the people who suffer ADHA who are characterized by not paying attention to the objects they look to.
Braingaze is a technological company led by Hans Supèr and Laszlo Bax, which taking as departure point the results of his research on the visual attention, has developed a model able to make an accurate detection of this ADHD biomarker, using some simple stimuli in a test which lasts less than 30 minutes. The model can be also used to analyse the attention that a driver poses in the driving activity he or she is developing. This offers a possibility to improve the systems to detect tiredness which are already in the most modern cars. Finally, the model can be also applied to neuromarketing. The method developed by the company Braingaze uses eye tracking to detect all fixation points, in order words, all the points which received the subject's attention.
More information: Puig, M. et al. A Role of Eye Vergence in Covert Attention. PLOS ONE, 2013.
Journal reference: PLoS ONE
Provided by University of Barcelona
- Studying everyday eye movements could aid in diagnosis of neurological disorders Aug 30, 2012 | not rated yet | 0
- Researchers uncover behavioral process anticipating the results of rapid eye movements Jan 10, 2011 | not rated yet | 0
- A real attention grabber Dec 02, 2007 | not rated yet | 0
- Study offers new clue on how brain processes visual information, provides insight into neural mechanisms of attention Jul 23, 2012 | not rated yet | 0
- Attention and awareness aren't the same Jun 06, 2011 | not rated yet | 0
- Motion perception revisited: High Phi effect challenges established motion perception assumptions Apr 23, 2013 | 3 / 5 (2) | 2
- Anything you can do I can do better: Neuromolecular foundations of the superiority illusion (Update) Apr 02, 2013 | 4.5 / 5 (11) | 5
- The visual system as economist: Neural resource allocation in visual adaptation Mar 30, 2013 | 5 / 5 (2) | 9
- Separate lives: Neuronal and organismal lifespans decoupled Mar 27, 2013 | 4.9 / 5 (8) | 0
- Sizing things up: The evolutionary neurobiology of scale invariance Feb 28, 2013 | 4.8 / 5 (10) | 14
Why is zone 1 in liver more prone to ischemic injury?
20 hours ago Hi, Is it because around central vein, there is only deoxygenated blood from the vein where as in the periphery there is hepatic artery. Also why...
How can there be villous adenoma in colon, if there are no villi there
May 22, 2013 As title suggest. Thanks :smile:
How can there be a term called "intestinal metaplasia" of stomach
May 21, 2013 Hello everyone, Ok Stomach's normal epithelium is simple columnar, now in intestinal type of adenocarcinoma of stomach it undergoes "intestinal...
Pressure-volume curve: Elastic Recoil Pressure don't make sense
May 18, 2013 From pressure-volume curve of the lung and chest wall (attached photo), I don't understand why would the elastic recoil pressure of the lung is...
If you became brain-dead, would you want them to pull the plug?
May 17, 2013 I'd want the rest of me to stay alive. Sure it's a lousy way to live but it beats being all-the-way dead. Maybe if I make it 20 years they'll...
MRI bill question
May 15, 2013 Dear PFers, The hospital gave us a $12k bill for one MRI (head with contrast). The people I talked to at the hospital tell me that they do not...
- More from Physics Forums - Medical Sciences
More news stories
A brief visual task can predict IQ, according to a new study. This surprisingly simple exercise measures the brain's unconscious ability to filter out visual movement. The study shows that individuals whose ...
Psychology & Psychiatry 12 hours ago | 4.4 / 5 (9) | 0 |
Nervous about that upcoming job interview? You might want to take steps to reduce your jitters, especially if you are a man.
Psychology & Psychiatry 13 hours ago | 5 / 5 (1) | 0
(Medical Xpress)—Research by U of T Mississauga psychology professor Glenn Schellenberg reveals that two key personality traits – openness-to-experience and conscientiousness—predict better than IQ ...
Psychology & Psychiatry 15 hours ago | 3 / 5 (2) | 1 |
Parents naturally are concerned for their children's safety, particularly when there is news of a child abduction that happens close to home. Finding the balance between emotions and the "teachable moment" as parents talk ...
Psychology & Psychiatry 15 hours ago | not rated yet | 0
A new report on suicide in Ireland shows that suicide cases experienced a significant number (and intensity) of life events in the 6 months prior to their death.
Psychology & Psychiatry 15 hours ago | not rated yet | 0
High blood glucose is associated with poor outcomes in hospitalized patients, and use of intensive insulin therapy (IIT) to control hyperglycemia is a common practice in hospitals. But the recent evidence does not show a ...
28 minutes ago | not rated yet | 0
(Medical Xpress)—Regulating the distribution of power in neurons is done by a system that makes the national electric grid look simple by comparison. Each neuron has several thousand mitochondria confined ...
6 hours ago | 4.8 / 5 (5) | 0 |
Teams of highly respected Alzheimer's researchers failed to replicate what appeared to be breakthrough results for the treatment of this brain disease when they were published last year in the journal Science.
10 hours ago | 5 / 5 (1) | 2 |
Scientists at the National Institutes of Health report they have discovered in mouse studies that a small molecule released in the spinal cord triggers a process that is later experienced in the brain as ...
10 hours ago | 5 / 5 (2) | 0 |
Little is known about why asthma develops, how it constricts the airway or why response to treatments varies between patients. Now, a team of researchers at Weill Cornell Medical College, Columbia University Medical Center ...
10 hours ago | not rated yet | 0 |
(HealthDay)—Type 2 diabetes is more aggressive in children than adults, with signs of serious complications seen just a few years after diagnosis, new research finds.
4 hours ago | not rated yet | 0