Navigation Links
JPEG for the mind: How the brain compresses visual information
Date:2/10/2011

ere quite different when the model was trained to limit the number of virtual V4 cells responding to each image. As this limit on responsive cells was tightened, the selectivity of the cells shifted from shallow to acute curvature. The tightest limit produced an eight-fold decrease in the number of cells responding to each image, comparable to the file size reduction achieved by compressing photographs into the .jpeg format. At this level, the computer model produced the same strong bias toward high curvature observed in the real V4 cells.

Why would focusing on acute curvature regions produce such savings? Because, as the group's analyses showed, high-curvature regions are relatively rare in natural objects, compared to flat and shallow curvature. Responding to rare features rather than common features is automatically economical.

Despite the fact that they are relatively rare, high-curvature regions are very useful for distinguishing and recognizing objects, said Connor, a professor in the Solomon H. Snyder Department of Neuroscience in the School of Medicine, and director of the Zanvyl Krieger Mind/Brain Institute.

"Psychological experiments have shown that subjects can still recognize line drawings of objects when flat edges are erased. But erasing angles and other regions of high curvature makes recognition difficult," he explained

Brain mechanisms such as the V4 coding scheme described by Connor and colleagues help explain why we are all visual geniuses.

"Computers can beat us at math and chess," said Connor, "but they can't match our ability to distinguish, recognize, understand, remember, and manipulate the objects that make up our world." This core human ability depends in part on condensing visual information to a tractable level. For now, at least, the .brain format seems to be the best compression algorithm around.


'/>"/>

Contact: Lisa DeNike
Lde@jhu.edu
443-287-9960
Johns Hopkins University
Source:Eurekalert  

Page: 1 2

Related medicine news :

1. What makes fructose fattening? OHSU researchers find some answers in the brain
2. Gestures May Help the Brain See
3. Study Links Brain Molecule to Risk of Major Depression
4. Major step taken toward an open and shared digital brain atlasing framework
5. Schizophrenia Drugs May Spur Subtle Brain Tissue Loss
6. Allergies Linked to Lower Brain Cancer Rate in Study
7. Brains need love, too
8. Electrical Stimulation of the Brain May Spark Insight
9. Targeted particle fools brains guardian to reach tumors
10. Brain scans predict likely success when it comes to quitting smoking
11. Brain pacemakers: A long-lasting solution in the fight against depression
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
JPEG for the mind:  How the brain compresses visual information
(Date:4/21/2015)... The American Society for Dermatologic Surgery is ... Brandt, M.D., by setting up two memorial funds in ... 1982, died earlier this month at age 65 at ... opportunities for ASDS members, industry and any interested donors ... Brandt held so dear. , “Dr. Brandt was one ...
(Date:4/21/2015)... The PracticeMatch Career Fair will ... pm at the William and Ida Friday Center at UNC-Chapel ... than 50 hospitals, clinics and groups with career opportunities will ... represented. Attendees will enjoy free hors d’oeuvres and raffle prize ... PracticeMatch says “Chapel Hill is an ideal location to ...
(Date:4/21/2015)... eSight is the only technology in the world that ... Tuesday, May 5th, Low Vision Specialists of Maryland and ... an unveiling and demonstration of the technology at 8:30 a.m ... will be the first ophthalmic practice in Maryland to offer ... will be available on the day of the unveiling. , ...
(Date:4/21/2015)... Bulk food-grade transportation services have ... indicating generally favorable purchasing conditions for buyers. “This market ... and the fact that most bulk food products are ... IBISWorld research analyst Hayden Shipp. “As such, many small ... and regional markets.” Suppliers include Ruan Transportation Management Systems, ...
(Date:4/21/2015)... As nationally recognized leaders in ... components of breast reconstruction research spanning both clinical ... reconstruction research continues to significantly contribute to better ... many unanswered questions remain requiring continuous multifaceted efforts ... says Dr. Oscar Ochoa emphasizing the importance of ...
Breaking Medicine News(10 mins):Health News:ASDS honors the legacy of Dr. Fredric Brandt 2Health News:ASDS honors the legacy of Dr. Fredric Brandt 3Health News:ASDS honors the legacy of Dr. Fredric Brandt 4Health News:PracticeMatch to Host Physician Career Fair at William and Ida Friday Center at UNC-Chapel Hill on April 29, 2015 2Health News:PracticeMatch to Host Physician Career Fair at William and Ida Friday Center at UNC-Chapel Hill on April 29, 2015 3Health News:eSight Electronic Glasses That Enable The Legally Blind To See – First In The World – Coming To Maryland 2Health News:eSight Electronic Glasses That Enable The Legally Blind To See – First In The World – Coming To Maryland 3Health News:Bulk Food-Grade Transportation Services Procurement Category Market Research Report from IBISWorld has Been Updated 2Health News:Bulk Food-Grade Transportation Services Procurement Category Market Research Report from IBISWorld has Been Updated 3Health News:Research Performed at PRMA Expands Breast Reconstruction Knowledge 2Health News:Research Performed at PRMA Expands Breast Reconstruction Knowledge 3Health News:Research Performed at PRMA Expands Breast Reconstruction Knowledge 4Health News:Research Performed at PRMA Expands Breast Reconstruction Knowledge 5
... Ill., July 17 Addus HomeCare Corporation announced today that it ... Securities and Exchange Commission (SEC) relating to a proposed initial public ... be offered and the price range for the offering have not ... offering will be offered by Addus HomeCare Corporation. , ...
... , , BLOOMFIELD HILLS, Mich., ... Health Group (Great Expressions) is offering free membership into the ... and families that have lost their dental benefits. The ... an in-house discount program that provides free examinations and up ...
... , , WILLIAMSBURG, Va., July 17 In ... abuse , the Farley Center at Williamsburg Place ... offered to provide expert consultation about this rare disorder. Omar S. ... of a handful of physicians highly experienced in this area and ...
... , , , WORCESTER, Mass., July ... leading super regional property and casualty insurer, today announced the availability of ... for family members in assisted living facilities. , ... ) , , The coverage is more ...
... , FRIDAY, July 17 (HealthDay News) -- Whether you have ... to do with your parenting skills because the combination of ... may determine a child,s temperament, a new study has found. ... and activity in the frontal cortex of the brain to ...
... , , CHAPEL HILL, N.C., July 17 Rabies ... system; the disease can cause death in humans if it is not ... foxes etc.); less than 10% of cases occur in domestic animals like ... an infected animal. , , Early ...
Cached Medicine News:Health News:Addus HomeCare Corporation Files Registration Statement 2Health News:Great Expressions Dental Centers, Inc. Offers Free Membership and Up to 35% Off Dental Care With the Great Expressions Smile Protection Program 2Health News:Omar S. Manejwala, MD Speaks Out Nationally on Diprivan/Propofol Abuse 2Health News:Omar S. Manejwala, MD Speaks Out Nationally on Diprivan/Propofol Abuse 3Health News:The Hanover Launches New Insurance Option to Protect Family Members in Assisted Living Facilities 2Health News:The Hanover Launches New Insurance Option to Protect Family Members in Assisted Living Facilities 3Health News:Easy Baby or Fussy -- It May Be Out of Mom's Control 2Health News:Rabies: How to Protect Yourself and Your Pets 2
(Date:4/20/2015)... April 20, 2015  Johnson & Johnson (NYSE: ... business for the investment community beginning at 8:30 a.m. ... Hyatt Regency Hotel in New Brunswick, New ... Paul Stoffels , M.D., Worldwide Chairman ... , Worldwide Chairman, Pharmaceuticals will host the meeting. ...
(Date:4/20/2015)... and Markets ( http://www.researchandmarkets.com/research/7t5xlp/us_proton_therapy ) has announced ... - Market Opportunities" report to their offering. ... Opportunities by the author, the United States ... centers by 2018, a number which is almost double ... Billion dollar mark to attain revenue of US$ 1.19 ...
(Date:4/20/2015)... BALTIMORE , April 20, 2015  Ameritox,s Ingenuity ... health clinicians, today presented clinical research at the National ... Orlando, Fla. , showing that nearly 25 percent ... illness (SMI) did not contain the prescribed antipsychotic medication. ... - http://photos.prnewswire.com/prnh/20150420/199663LOGO ...
Breaking Medicine Technology:United States Proton Therapy Outlook to 2018 - Market Opportunities for the $1.19 Billion Market Featuring IBA, Hitachi, Mevion Medical Systems & Varian 2United States Proton Therapy Outlook to 2018 - Market Opportunities for the $1.19 Billion Market Featuring IBA, Hitachi, Mevion Medical Systems & Varian 3Ingenuity Health Research Flags Potentially High Rate of Medication Nonadherence Among Those with Serious Mental Illness 2Ingenuity Health Research Flags Potentially High Rate of Medication Nonadherence Among Those with Serious Mental Illness 3
... TORONTO, Dec. 2, 2010 According to Millennium Research ... intelligence, cardiac surgeons are trying new innovative approaches to ... coronary artery bypass graft (CABG) procedures less invasive where ... led to the introduction of less invasive variations of ...
... Amgen (Nasdaq: AMGN ) today announced that ... at the 52nd Annual Meeting and Exposition of the American ... Results from six studies evaluating Nplate in adult patients with ... body of data supporting the use of Nplate in this ...
Cached Medicine Technology:$30 Million CABG Market Supported by Use of Intuitive Surgical's da Vinci Robot in Minimally Invasive CABG Procedures 2$30 Million CABG Market Supported by Use of Intuitive Surgical's da Vinci Robot in Minimally Invasive CABG Procedures 3Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 2Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 3Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 4Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 5Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 6Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 7Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 8Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 9Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 10Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 11Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 12Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 13Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 14Amgen Highlights Data to Be Presented at American Society of Hematology Annual Meeting 15
... The SG210D combines a slab gel dryer ... convenient gel drying without any hardware setup. The ... fixed in acetic acid, protein/agarose gels, and multiple ... in 60 minutes or less. , Completely ...
Inquire...
... system, Hoefers Easy Breeze can dry as many as ... Mini-Gels (8 x 10 cm) at a time. , ... drying oven, a specially designed loading platform, and two ... no awkward connections., The Gel Frame is largely responsible ...
... HydroTech™ gel drying system, 220-240 V, includes Model ... The Model 583 gel dryer is a vacuum-based ... x 45 cm with variable temperature control and ... a water-based vacuum pump used for pulling vacuum ...
Medicine Products: