Communities
People & Pages
Post has shared content
Can't get an image out of your head? Your eyes are helping to keep it there
Even though you are not aware of it, your eyes play a role in searing an image into your brain, long after you have stopped looking at it.
Through brain imaging, Baycrest scientists have found evidence that the brain uses eye movements to help people recall vivid moments from the past, paving the way for the development of visual tests that could alert doctors earlier about those at risk for neurodegenerative illnesses.
The study, published in the journal Cerebral Cortex, found that when people create a detailed mental image in their head, not only do their eyes move in the same way as when they first saw the picture, their brains showed a similar pattern of activity.
“There’s a theory that when you remember something, it’s like the brain is putting together a puzzle and reconstructing the experience of that moment from separate parts,” says Dr. Bradley Buchsbaum, senior author on the study, scientist at Baycrest’s Rotman Research Institute (RRI) and psychology professor at the University of Toronto. “The pattern of eye movements is like the blueprint that the brain uses to piece different parts of the memory together so that we experience it as a whole.”
This is the first time a direct connection has been established between a person’s eye movements and patterns of brain activity, which follows up on previous studies linking what we see to how we remember.
In the study, researchers used a mathematical algorithm to analyze the brain scans and eye movements of 16 young adults between the ages of 20 to 28. Individuals were shown a set of 14 distinct images for a few seconds each. They were asked to remember as many details of the picture as possible so they could visualize it later on. Participants were then cued to mentally visualize the images within an empty rectangular box shown on the screen. Brain imaging and eye-tracking technology simultaneously captured the brain activity and eye movements of the participants as they memorized and remembered the pictures.
The study, led by RRI graduate student Michael Bone, discovered the same pattern of eye movements and brain activation, but compressed, when the picture was memorized and then remembered.
“This is likely because when we recall a memory, it’s a condensed version of the original experience. For example, if a marriage proposal took two minutes, when we picture this memory in our head, we re-experience it in a much shorter timeframe,” says Dr. Buchsbaum. “The eye movements are like a short-hand code that your brain runs through to trigger the memory.”
By looking at the patterns of eye movement and brain activity, researchers were able to identify which image a person was remembering during the task.
As next steps, the study will explore distinguishing whether the eye movements lead the brain to reactivate the memory or vice versa. Having a greater understanding of this causal relationship could inform the creation of a diagnostic tool using the eyes to catch when a person’s memory is headed down an unhealthy path, adds Dr. Buchsbaum.
Source:
https://www.eurekalert.org/pub_releases/2018-02/bcfg-cga021318.php
Journal article:
https://academic.oup.com/cercor/advance-article/doi/10.1093/cercor/bhy014/4836786
#eyemovements #neuroimaging #brainactivity #memory #mentalimagery #neuroscience #research
Even though you are not aware of it, your eyes play a role in searing an image into your brain, long after you have stopped looking at it.
Through brain imaging, Baycrest scientists have found evidence that the brain uses eye movements to help people recall vivid moments from the past, paving the way for the development of visual tests that could alert doctors earlier about those at risk for neurodegenerative illnesses.
The study, published in the journal Cerebral Cortex, found that when people create a detailed mental image in their head, not only do their eyes move in the same way as when they first saw the picture, their brains showed a similar pattern of activity.
“There’s a theory that when you remember something, it’s like the brain is putting together a puzzle and reconstructing the experience of that moment from separate parts,” says Dr. Bradley Buchsbaum, senior author on the study, scientist at Baycrest’s Rotman Research Institute (RRI) and psychology professor at the University of Toronto. “The pattern of eye movements is like the blueprint that the brain uses to piece different parts of the memory together so that we experience it as a whole.”
This is the first time a direct connection has been established between a person’s eye movements and patterns of brain activity, which follows up on previous studies linking what we see to how we remember.
In the study, researchers used a mathematical algorithm to analyze the brain scans and eye movements of 16 young adults between the ages of 20 to 28. Individuals were shown a set of 14 distinct images for a few seconds each. They were asked to remember as many details of the picture as possible so they could visualize it later on. Participants were then cued to mentally visualize the images within an empty rectangular box shown on the screen. Brain imaging and eye-tracking technology simultaneously captured the brain activity and eye movements of the participants as they memorized and remembered the pictures.
The study, led by RRI graduate student Michael Bone, discovered the same pattern of eye movements and brain activation, but compressed, when the picture was memorized and then remembered.
“This is likely because when we recall a memory, it’s a condensed version of the original experience. For example, if a marriage proposal took two minutes, when we picture this memory in our head, we re-experience it in a much shorter timeframe,” says Dr. Buchsbaum. “The eye movements are like a short-hand code that your brain runs through to trigger the memory.”
By looking at the patterns of eye movement and brain activity, researchers were able to identify which image a person was remembering during the task.
As next steps, the study will explore distinguishing whether the eye movements lead the brain to reactivate the memory or vice versa. Having a greater understanding of this causal relationship could inform the creation of a diagnostic tool using the eyes to catch when a person’s memory is headed down an unhealthy path, adds Dr. Buchsbaum.
Source:
https://www.eurekalert.org/pub_releases/2018-02/bcfg-cga021318.php
Journal article:
https://academic.oup.com/cercor/advance-article/doi/10.1093/cercor/bhy014/4836786
#eyemovements #neuroimaging #brainactivity #memory #mentalimagery #neuroscience #research
Add a comment...
Post has shared content
Yesterday, the F-15B bearing NASA tail number 836 conducted its 500th supersonic test mission flight since its arrival at Armstrong Flight Research Center in the early 90’s. The F-15B is 64 feet long and has a wingspan of just under 43 feet. It is powered by two Pratt and Whitney F100-PW-100 turbofan engines that can produce almost 24,000 pounds of thrust each in full afterburner. It is capable of dash speeds well in excess of Mach 2, more than twice the speed of sound, at altitudes of 40,000 to 60,000 feet, although speeds are limited to Mach 2 when a flight test fixture is mounted beneath the fuselage. The aircraft has a full-fuel takeoff weight of about 42,000 pounds and a landing weight of about 32,000 pounds. It has aerial refueling capability for extended-duration research missions. Visit https://go.nasa.gov/2H40Oin to learn more about the F-15B. #Aero #AVgeeks #NASA #Armstrong #Flight #Research
Add a comment...
Post has attachment
Public
#TeamTuesday Oil And Gas Sector Needs To Innovate And Adapt Without Losing Focus https://bit.ly/2LPFzBT Every two years the great and the good in the oil and gas industry congregate in the southern Norway town of Stavanger for the ONS exhibition. This year’s event attracted 1,124 exhibitors from 37 countries visited by more than 65,000 people over the four days.
Since the previous event in 2016 the doom and gloom that pervaded the industry has lifted, boosted by hard-earned efficiencies that have reduced the breakeven cost per barrel coupled with a strengthening oil price. However, although the portents appear good as an industry that is used to cyclical challenges nothing is being taken for granted.
Opening thoughts
The event was opened by His Royal Highness Crown Prince Haakon of Norway opened, followed by the first of many high-level discussions. This opening session featured prominent speakers such as Patrick Pouyanné, Chairman, and CEO of Total, Eldar Sætre, President, and CEO of Equinor and Lise Kingo, CEO and Executive Director of UN Global Compact.
#Oil #Gas #EnergyIndustry #Technology #Research #Innovation #Events #WhatsNext Meet the team https://bit.ly/2wrXoRW
Since the previous event in 2016 the doom and gloom that pervaded the industry has lifted, boosted by hard-earned efficiencies that have reduced the breakeven cost per barrel coupled with a strengthening oil price. However, although the portents appear good as an industry that is used to cyclical challenges nothing is being taken for granted.
Opening thoughts
The event was opened by His Royal Highness Crown Prince Haakon of Norway opened, followed by the first of many high-level discussions. This opening session featured prominent speakers such as Patrick Pouyanné, Chairman, and CEO of Total, Eldar Sætre, President, and CEO of Equinor and Lise Kingo, CEO and Executive Director of UN Global Compact.
#Oil #Gas #EnergyIndustry #Technology #Research #Innovation #Events #WhatsNext Meet the team https://bit.ly/2wrXoRW
Add a comment...
Post has attachment
Public
#International #Conference on #Proteomics and #Genomics is going to be held during #December 03-05, 2018 at #Valencia, Spain: #Accepting #abstracts for #poster #presentations.
#Students #hurry up, take an opportunity to present your new #research concepts at #Proteomics-2018.
For more info about conference please follow: https://proteomics.madridge.com/index.php
Email us at: proteomics@madridge.com
#Students #hurry up, take an opportunity to present your new #research concepts at #Proteomics-2018.
For more info about conference please follow: https://proteomics.madridge.com/index.php
Email us at: proteomics@madridge.com
Add a comment...
Post has attachment
A Comparison of Visual Outcomes of Deep Anterior Lamellar Keratoplasty versus Penetrating Keratoplasty in Patients with Keratoconus, Research article by H Dwight Cavanagh, USA.
http://www.heraldopenaccess.us/fulltext/Ophthalmology-&-Clinical-Research/A-Comparison-of-Visual-Outcomes-of-Deep-Anterior-Lamellar-Keratoplasty-versus-Penetrating-Keratoplasty-in-Patients-with-Keratoconus.php
Source: Journal of #Ophthalmology & Clinical Research | ISSN:2378-8887
Deep Anterior Lamellar Keratoplasty (DALK) was found to be superior to Penetrating Keratoplasty (PKP) in terms of reduced risk of endothelial rejection, lower loss of endothelial cell density, and lower risk of ruptured globe injury after trauma.
#cornea #Keratoconus #keratoplasty #research #Heraldopenaccess
http://www.heraldopenaccess.us/fulltext/Ophthalmology-&-Clinical-Research/A-Comparison-of-Visual-Outcomes-of-Deep-Anterior-Lamellar-Keratoplasty-versus-Penetrating-Keratoplasty-in-Patients-with-Keratoconus.php
Source: Journal of #Ophthalmology & Clinical Research | ISSN:2378-8887
Deep Anterior Lamellar Keratoplasty (DALK) was found to be superior to Penetrating Keratoplasty (PKP) in terms of reduced risk of endothelial rejection, lower loss of endothelial cell density, and lower risk of ruptured globe injury after trauma.
#cornea #Keratoconus #keratoplasty #research #Heraldopenaccess
Post has attachment
We love watching the blue herons in our study area. They look so elegant until they speak - they sound like a dinosaur! #pacmam #research #bird #blueheron #dinosaurlike
Add a comment...
Post has attachment
Public
Come and join us to the upcoming meeting on #Biomedicine & #Pharmacotherapy and meet the leading #Pharmaceutical Professors #Researchers,#BusinessDelegates to know more about recent #research on #biomedicine held in #March 29-30,2019 at #Hong Kong
Add a comment...
Wait while more posts are being loaded