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:7/2/2015)... , ... July 02, 2015 , ... ... to healthcare providers, has been retained to lead a national chief operating ... top executive search firms in the healthcare industry, B. E. Smith has recently ...
(Date:7/2/2015)... ... ... AvePoint Public Sector, Inc., a wholly owned subsidiary of AvePoint, ... was named the recipient of the 2015 GTRA ConVurge Tech Award for Excellence in ... Technology Research Alliance (GTRA), was presented June 29 during the ConVurge Honorary Awards dinner ...
(Date:7/2/2015)... ... , ... As the world becomes more connected through the Internet, not only ... in their everyday lives. Technology can now help homeowners gain more control of their ... as well as making kitchen tasks simpler. , "Summer is a great ...
(Date:7/2/2015)... ... July 02, 2015 , ... A Board ... CoolSculpting Plus, an advanced approach to body contouring. CoolSculpting Plus combines CoolSculpting® ... About the basic CoolSculpting procedure:, The CoolSculpting procedure is the only ...
(Date:7/2/2015)... ... July 02, 2015 , ... ... nutritionally based weight-loss programs , was named No. 14 on ColoradoBiz magazine’s Top ... the third year SlimGenics has been recognized. The award identifies outstanding woman-owned businesses ...
Breaking Medicine News(10 mins):Health News:Nicklaus Children’s Hospital Retains B. E. Smith to Recruit New Chief Operating Officer 2Health News:Nicklaus Children’s Hospital Retains B. E. Smith to Recruit New Chief Operating Officer 3Health News:AvePoint Public Sector Wins 2015 GTRA ConVurge Tech Award for Excellence in Government SaaS 2Health News:AvePoint Public Sector Wins 2015 GTRA ConVurge Tech Award for Excellence in Government SaaS 3Health News:AvePoint Public Sector Wins 2015 GTRA ConVurge Tech Award for Excellence in Government SaaS 4Health News:KillerApps.TV Teams with Mario Armstrong to Feature Smart Home Technology 2Health News:KillerApps.TV Teams with Mario Armstrong to Feature Smart Home Technology 3Health News:KillerApps.TV Teams with Mario Armstrong to Feature Smart Home Technology 4Health News:Fort Myers Plastic Surgeon Introduces a New and Improved Body Contouring Procedure - CoolSculpting Plus™ 2Health News:Fort Myers Plastic Surgeon Introduces a New and Improved Body Contouring Procedure - CoolSculpting Plus™ 3Health News:Fort Myers Plastic Surgeon Introduces a New and Improved Body Contouring Procedure - CoolSculpting Plus™ 4Health News:ColoradoBiz Magazine Names SlimGenics #14 on Top 100 Woman-Owned Companies List 2Health News:ColoradoBiz Magazine Names SlimGenics #14 on Top 100 Woman-Owned Companies List 3
... pills a patient is prescribed to take and how well ... a new study presented recently at the 19th Annual Meeting ... San Diego (April 11-14). The large-scale study looked at patients ... channel blockers (CCBs), and provides more supportive evidence that adherence ...
... some of us gain more weight than others- This ... molecule called BSX, as scientists from the European Molecular ... [DIFE], Potsdam, and the University of Cincinnati report in ... is the molecular link between spontaneous physical activity and ...
... of Leeds have found a mechanism to prevent a ... ,Dr Lezanne Ooi, a postdoctoral researcher in ... progression of cardiac hypertrophy can be halted by increasing ... a significant discovery because whilst the symptoms can be ...
... Indonesia, the country worst hit by bird flu, have ... susceptible to infection, an official warned Wednesday . ... flu control, Bayu Krisnamurthi, also told reporters the human ... to 86.4 percent, as compared with 74.5 percent the ...
... needs of the country, Prime Minister Manmohan Singh will ... (NDC) to discuss disease control and public health . ... implementation of the National Rural Health Mission (NRHM), he ... issues and ensure efficient functioning of public health services, ...
... Network) Foundation has organized a function for honoring of Organ ... ,Organ donation is the most selfless gift that ... India almost twelve hundred transplants of kidneys, heart, liver have ... take place after declaration of brain death by specialists. MOHAN ...
Cached Medicine News:Health News:Molecular Basis of Obesity-Revealing the Unknown Facts 2Health News:Breakthrough for Treatment of Fatal Heart Condition 2Health News:Honoring of Organ Donor Families at Raj Bhavan in Chennai 2
(Date:7/2/2015)... 2, 2015  Konica Minolta, Inc. (Konica Minolta) ( ... has acquired Sawae Technologica Ltda., an X-ray system equipment ... , through its Brazilian healthcare sales company, Konica Minolta ... Local Brazil market investment and ... exceeding 200 million, significant healthcare technical advancements and efficiencies ...
(Date:7/2/2015)... Ill. , July 2, 2015  AbbVie (NYSE: ... results on Friday, July 24, 2015, before the market ... of the earnings conference call at 8 a.m. Central ... AbbVie,s Investor Relations website at www.abbvieinvestor.com . An ... 11 a.m. Central time. About AbbVie ...
(Date:7/2/2015)... July 2, 2015 BGI announced today that ... Kong has been accredited by the American ... the first clinical next-generation-sequencing laboratory to receive the CAP ... highest standard in clinical laboratory practices. Complementary to the exiting ... process, and multiple ISO certifications, the CAP certification enables ...
Breaking Medicine Technology:Konica Minolta Acquires Sawae, Enhancing Digital X-ray Diagnostic Imaging Systems in Brazil 2Konica Minolta Acquires Sawae, Enhancing Digital X-ray Diagnostic Imaging Systems in Brazil 3BGI Receives Accreditation from the College of American Pathologists (CAP) 2
... Uroplasty, Inc. (NASDAQ: UPI ), ... markets innovative proprietary products to treat voiding dysfunctions, ... No. 8,046,082 covering the stimulator used in the ... System is an office-based, non-surgical system, used to ...
... LCA-Vision Inc. (NASDAQ: LCAV ), a leading provider ... brand, today announced that management will present at the Lazard ... 2011, at 11:00 a.m. Eastern time. The conference is being ... live and archived webcast of the presentation will be available ...
Cached Medicine Technology:Uroplasty Announces Issuance of New Apparatus Patent for the Urgent® PC Neuromodulation System Stimulator 2
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
... ARUP Laboratories is a national reference ... laboratory research and development. ARUP offers an ... unique medical tests in clinical and anatomic ... ARUP Laboratories' clients include more than half ...
... Laboratories is a national reference laboratory and ... and development. ARUP offers an extensive test ... tests in clinical and anatomic pathology. Owned ... clients include more than half of the ...
... ARUP Laboratories is a national reference laboratory ... research and development. ARUP offers an extensive ... medical tests in clinical and anatomic pathology. ... Laboratories' clients include more than half of ...
Medicine Products: