Navigation Links
Barrow scientists solve 200-year-old scientific debate involving visual illusions
Date:11/20/2008

Neuroscientists at Barrow Neurological Institute at St. Joseph's Hospital and Medical Center have discovered a direct link between eye motions and the perception of illusory motion that solves a 200-year-old debate.

Stephen Macknik, PhD, director of the Laboratory of Behavioral Neurophysiology; Susana Martinez-Conde, PhD, director of the Laboratory of Visual Neuroscience; Xoana G. Troncoso, PhD; and Jorge Otero-Millan; conducted a study based on the Enigma painting, a visual illusion in which rotational motion is seen within a stationary image. The artwork has been at the center of a debate over whether the brain or the eye is behind the perception of illusory motion.

Dr. Martinez-Conde's laboratory recently discovered that microsaccades, a small, unconscious eye movement that occurs when humans fixate their eyes, are critical to normal vision. The team of scientists conducted the Enigma study to see if microsaccades are also behind the perception of this illusion. Based on their study, the hypothesis suggesting the illusion originates solely in the brain was ruled out.

Participants in the study observed the Enigma illusion while their eye movements were simultaneously recorded with high precision cameras. Microsaccade rates increased before the illusionary motion sped up and decreased before the motion slowed, revealing a direct link between the eye movements and the illusion.

"We have discovered that this illusion originates with eye movements and not solely the brain as previously thought," says Dr. Martinez-Conde. "The findings from the study could help design future prosthetics for patients with brain damage or brain lesions that affect the perception of motion."


'/>"/>

Contact: Carmelle Malkovich
602-406-3319
St. Joseph's Hospital and Medical Center
Source:Eurekalert

Page: 1

Related biology news :

1. Scientists find facial scars increase attractiveness
2. Chicks to give scientists clearer picture of fetal development
3. NYU biologist Bonneau named among 20 "visionary" scientists under 40 by Discover magazine
4. Scientists announce major progress towards historic Census of Marine Life in 2010
5. Washington University scientists first to sequence genome of cancer patient
6. Scripps research scientists identify compounds for stem-cell production from adult cells
7. 12 outstanding young scientists named as EMBO Young Investigators
8. Scripps Florida scientists awarded $1.5M to fight major water and food parasites
9. European biodiversity and ecosystem scientists merge and gear up for long-term research
10. Scientists unveil mechanism for up and down in plants
11. Scientists identify cell changes leading to impaired artificial kidney function
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/1/2014)... October 1, 2014 Novel ... life science field  The life science ... go over the years. Some are shooting stars ... is a novel detection technology that has raised ... finally, this technology is becoming commercially available. With ...
(Date:9/30/2014)... something that we enjoy when we visit a national park ... of ourselves as a part of nature? A bird,s nest ... , The answers to these questions reflect different cultural ... and in cultural artifacts. , A new Northwestern University study, ... Center of Chicago and the Menominee tribe of Wisconsin, focuses ...
(Date:9/30/2014)... and Howard Hughes Medical Institute investigator, and Margarita ... in the 2014 round of grants from the ... (Brain Research through Advancing Innovative Neurotechnologies) Initiative for ... 30, provides more than $3 million in funding ... The BRAIN Initiative, launched last year, is a ...
Breaking Biology News(10 mins):First-of-a-kind Solution for Utilizing Photon Upconversion 2The cultural side of science communication 2Salk scientists receive $3 million for BRAIN Initiative grant 2
... than a dozen countries joined together to sequence the tomato ... The Tomato Genomics Consortium directed the research effort, which ... Foundation and the USDA,s Agriculture Research Services. The OU ... Emeritus in the College of Arts and Sciences, was one ...
... 2012) -- A detailed analysis of more than 4 ... help electricity producers slash as much as 30 percent ... dioxide from power plant emissions. The research by ... Lawrence Berkeley National Laboratory (LBNL) and the Electric Power ...
... Madrid, May, 31st, 2012.- Madrid will become ... during the Biomedical Innovation Conference 2012, focused on ... Madrid-MIT M+Vision Consortium. This new organization has been ... and the regional Government of the Comunidad de ...
Cached Biology News:New materials could slash energy costs for CO2 capture 2New materials could slash energy costs for CO2 capture 3MADRID-MIT M+Vision Consortium hosts Biomedical Innovation Conference 2012 2
(Date:10/1/2014)... 2014 Today the National Institutes ... grants for the Brain Research through Advancing Innovative ... develop and revolutionize new methods of understanding the ... brain. This first round of grants totaling $46 ... allocated to more than 100 investigators in 15 ...
(Date:10/1/2014)... TeselaGen Biotechnology has received ... expand their bioCAD/CAM software suite, which uses synthetic ... Small Business Innovation Research Phase II grant will be ... license from the Lawrence Berkeley National Laboratory. j5 was ... LBNL laboratory that develops alternative fuel technologies for the ...
(Date:9/30/2014)... 2014 Applying a well-known optical phenomenon called ... University has demonstrated the ability to "paint" ultra-thin ... holds promise for making future, flexible electronic devices, ... of next-gen rocket ships and spacecraft with extremely ... oil in water, it becomes iridescent, revealing a ...
(Date:9/30/2014)... Shimadzu Scientific Instruments has released the DSES-1000 ... tool for measuring displacement in rubber and other ... movement distance, the DSES-1000 can measure elongations up ... 10 mm. In addition, it achieves +/- 0.2 ... within +/- 100 µm below 50-mm stroke. , ...
Breaking Biology Technology:NIH Awards 15 Grants to CHI Members for BRAIN Initiative Research 2NIH Awards 15 Grants to CHI Members for BRAIN Initiative Research 3TeselaGen Receives $750k NSF SBIR Phase II Award 2TeselaGen Receives $750k NSF SBIR Phase II Award 3Taking thin films to the extreme 2Shimadzu’s New Long-Travel Extensometer Increases Precision for Soft Material Testing 2
... announced that Ricky Takai, Ph.D., has joined the company ... the firm, Dr. Takai will become the leader of ... Takai brings his more than 20 years experience in ... the field of education to the company.Most recently, Dr. ...
... Inc. (Nasdaq: BMRN ) today announced ... placebo-controlled clinical study of 6R-BH4 in patients with ... no statistical significance observed between the 6R-BH4 treatment ... peak walking time (PWT), did not show a ...
... CHICAGO, Feb. 3 Advanced Life Sciences Holdings,Inc. (Nasdaq: ... the discovery,development and commercialization of novel drugs in the ... that the Company,will make a corporate presentation to investors ... Company,s presentation will be delivered in the Windsor Suite,at ...
Cached Biology Technology:Dr. Ricky Takai, Expert in Designing and Managing Federal Evaluation Studies in Education, Joins Abt Associates 2Results From Phase 2 Clinical Study of 6R-BH4 in Peripheral Arterial Disease Not Statistically Significant 2Results From Phase 2 Clinical Study of 6R-BH4 in Peripheral Arterial Disease Not Statistically Significant 3Results From Phase 2 Clinical Study of 6R-BH4 in Peripheral Arterial Disease Not Statistically Significant 4Advanced Life Sciences to Present at the 11th Annual BIO CEO & Investor Conference 2Advanced Life Sciences to Present at the 11th Annual BIO CEO & Investor Conference 3
... a new product number, created to ... showing no availability yet, please order ... or contact customer service for assistance. ... 11.25 6.40 in. Mfr ...
A convenience pack containing one each of the most popular sizes of Cat. No. 4980 flask. Designed for the low volume user, a case contains one each of five sizes: 50mL, 125mL, 250mL, 500mL, and 1L....
...
...
Biology Products: