Navigation Links
Hollow mask illusion fails to fool schizophrenia patients
Date:4/6/2009

Patients with schizophrenia are able to correctly see through an illusion known as the 'hollow mask' illusion, probably because their brain disconnects 'what the eyes see' from what 'the brain thinks it is seeing', according to a joint UK and German study published in the journal NeuroImage. The findings shed light on why cannabis users may also be less deceived by the illusion whilst on the drug.

People with schizophrenia, a mental illness affecting about one per cent of the population, are known to be immune to certain vision illusions. The latest study confirms that patients with schizophrenia are not fooled by the 'hollow mask' illusion, and that this may relate to a difference in the way two parts of their brains communicate with each other the 'bottom-up' process of collecting incoming visual information from the eyes, and the 'top-down' process of interpreting this information.

Illusions occur when the brain interprets incoming sensory information on the basis of its context and a person's previous experience, so called top-down processing. Sometimes this process can mean that people's perception of an object is quite different to reality a phenomenon often exploited by magicians. The new study, by scientists at the Hannover Medical School in Germany and UCL Institute of Cognitive Neuroscience in the UK, suggests that patients with schizophrenia rely considerably less on top-down processing during perception.

The study used a variation on the three-dimensional 'hollow mask' illusion. In this illusion, a hollow mask of a face (pointing inwards, or concave) appears as a normal face (pointing outwards, or convex). During the experiment, 3D normal faces and hollow faces were shown to patients with schizophrenia and control volunteers while they lay inside an fMRI brain scanner, which monitored their brain responses.

As expected, all 16 control volunteers perceived the hollow mask as a normal face mis-categoris
'/>"/>

Contact: Jenny Gimpel
j.gimpel@ucl.ac.uk
44-207-679-9726
University College London
Source:Eurekalert

Page: 1 2 3

Related medicine news :

1. Hollow gold nanospheres show promise for biomedical and other applications
2. ev3 and FoxHollow Technologies Announce Completion of Merger
3. Optical illusions: Variety makes us perceive smaller quantities
4. Drug Fails to Slow Progression of Atherosclerosis
5. Collagen injections can help some incontinence patients when surgery fails, researcher finds
6. FDA Fails to Protect Public: Remains Silent About Lead in Lipstick
7. Imaging of Low Back Pain Fails to Change Outcomes
8. Virginia Leaders Should Reject Flawed Smoke-Free Legislation That Fails to Protect Everyones Right to Breathe Clean Air
9. HIPAA privacy rule fails to adequately protect patient privacy and hampers health research
10. Sepsis Therapy in Preemies Fails to Boost Survival
11. Common treatment for chronic prostatitis fails to reduce symptoms
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2015)... (PRWEB) , ... August 28, 2015 , ... ... of the Veterans Award, honoring military veterans leading in business. Mr. Troy ... , The inaugural Nashville Business Journal's 2015 Veterans Awards will recognize ...
(Date:8/28/2015)... ... , ... The Quatela Center for Plastic Surgery is excited to bring patients ... approved by the Food and Drug Administration to eliminate submental fat, also known as ... are among the premier cosmetic surgeons in Rochester to offer this innovative procedure.     ...
(Date:8/28/2015)... ... August 28, 2015 , ... Healthpointe clinics throughout ... go deep sea diving. The act of recreational diving exposes the body ... reasons, it is vital that all recreational and professional divers undergo regular comprehensive ...
(Date:8/28/2015)... ... August 28, 2015 , ... United Benefit Advisors (UBA), ... Insurance Group as its newest Partner Firm. Founded in 1924 and headquartered in ... focused on their goals. Within the past 10 years, TJS Insurance Group has ...
(Date:8/28/2015)... ... 28, 2015 , ... Yisrayl Hawkins, Pastor and Overseer at The House of ... to be taken in order to ease the stress on the atmosphere, and ... yet to understand fully the real cause of global warming and urges them to ...
Breaking Medicine News(10 mins):Health News:MyGenetx Board Member Receives Veterans Award 2Health News:Non-surgical Treatment to Get Rid of The "Double Chin," Kybella™, Now Available at the Quatela Center for Plastic Surgery 2Health News:Non-surgical Treatment to Get Rid of The "Double Chin," Kybella™, Now Available at the Quatela Center for Plastic Surgery 3Health News:Healthpointe Now Offering Scuba Physicals 2Health News:TJS Insurance Group Is Latest Partner Firm To Join United Benefit Advisors 2Health News:TJS Insurance Group Is Latest Partner Firm To Join United Benefit Advisors 3Health News:Wake Up and Smell the Sick Atmosphere Says Yisrayl Hawkins in New Article This Week 2
... annual flu vaccines in children ages 16 and younger have ... key measures. ,The finding was especially true for children ... their shots. Children who received a weakened form of the ... children under age 2 who received the inactivated form of ...
... found to increase the incidence of incontinence in postmenopausal ... ,Estrogen plus progestin or estrogen alone has ... therapy (MHT), which consists of estrogen and progestin treatment, ... night sweats, and vaginal dryness. MHT was often prescribed ...
... that had plagued new mothers all over the world, // was ... of this belief, many pregnant women opted for a planned caesarian ... the recent issue of British Medical Journal says that this may ... University, who had led the team of researchers in the study, ...
... WHO had urged the people to be prepared for any outbreak ... spreads from birds to other animal species, even to humans, WHO ... may soon mutate itself to a form that may spread the ... immunity will be unable to handle. ,The disease was first ...
... say those in the early stages of antidepressant medication ... suicidal behavior . ,For the study more than ... studied. Patients taking SSRIs were twice as likely to ... found no difference in patients taking SSRIs and ...
... has devised a test to predict dental caries in children. ... concentration of various sugar chains called oligosaccharides. ,Sugar ... the teeth surface. Some sugar chains repel bacteria to attack ... the tooth. Each individual sugar chain components are determined by ...
Cached Medicine News:
(Date:8/28/2015)... Korea , Aug. 28, 2015 ... University and Dr. Ra from Biostar , Published ... Confirmed 30% increase of lifespan through multiple IV administration ... physical vitality, and life expectancy found , Commercialization ... Korea have determined the possibility that adult mesenchymal stem ...
(Date:8/27/2015)... 27, 2015  The Academy of Managed Care ... Administration,s (FDA,s) draft guidance and proposed rule that ... to bear a nonproprietary name with an FDA-designated ... a decision from the FDA on the naming ... stakeholders urging the agency to use the same ...
(Date:8/27/2015)... , August 27, 2015 According to a ... Hammock, Toilet, Seating, Universal, Standing, Bariatric ), Material (Nylon, Padded, Canvas), ... to 2020", published by MarketsandMarkets, the Medical Lifting Sling Market is ... Million in 2015, at a CAGR of 11.4 % from 2015 ... ma rket data T ables and ...
Breaking Medicine Technology:Korean Researchers Find the Possibility that Adult Mesenchymal Stem Cells (MSCs) May Extend Lifespan 2AMCP Is Disappointed in FDA's Draft Guidance and Proposed Rule Calling for Suffix on Nonproprietary Names of Biological Products 2Medical Lifting Sling Market Worth USD 706.0 Million by 2020 2Medical Lifting Sling Market Worth USD 706.0 Million by 2020 3Medical Lifting Sling Market Worth USD 706.0 Million by 2020 4
... The chairman of the U.S. bishops, Committee on Pro-Life ... (FDA) over its move toward approving a new drug that may ... 17 letter to Dr. Margaret Hamburg , Commissioner of ... Houston criticized the FDA,s move to hold an advisory committee ...
... Amnis Corporation, a manufacturer of advanced cell ... option for the ImageStreamX cell analysis system. The AutoSampler ... a wide variety of 96 well plates, including standard-height ... The acquisition software incorporates easy-to-use templates that allow multiple ...
Cached Medicine Technology:Pro-Life Chair Voices 'Grave Concern' over FDA Plan to Approve Abortion Drug for 'Emergency Contraception' 2Pro-Life Chair Voices 'Grave Concern' over FDA Plan to Approve Abortion Drug for 'Emergency Contraception' 3Pro-Life Chair Voices 'Grave Concern' over FDA Plan to Approve Abortion Drug for 'Emergency Contraception' 4Amnis Releases AutoSampler Option for the ImageStreamX 2
... Cerner PowerChart Electronic Medical Record system ... to create an enterprise-wide, multifacility, multi-entity, ... streamlines the workflow process into one ... the functions that support the electronic ...
Developed in a Microsoft Windows environment, MedInformatix provides physician practices a Computerized Patient Record (CPR) with a Practice Management System (PMS) that is both integrated and design...
... Health Record (EHR/EMR) and ... Specialties that we currently ... Cardiology, Dermatology, Family Medicine, ... Neurosurgery, Obstetrics and Gynecology, ...
... MRAnywhere stands for Medical ... Electronic Medical Records (EMR) software ... charts from within your office, ... Wide Web. MRAnywhere offers conversion ...
Medicine Products: