Navigation Links
The brain 'joins the dots' when drawing a cartoon face from memory
Date:3/19/2009

Milan, Italy, 19 March 2009 - In a study by Miall, Gowen and Tchalenko published by Elsevier, in the March issue of Cortex (http://www.elsevier.com/locate/cortex), a brain scanner was used to record the brain's activity in each stage of the process of drawing faces. The researchers found that the captured visual information is stored as a series of locations or action plans to reach those locations. It is as if the brain remembers key locations and then "joins the dots" with a straight or curved line to achieve the desired image on the page.

Participants who had no particular expertise as artists were studied using an MRI scanner to measure levels of oxygen in the brain. They viewed black and white cartoons of faces and were asked to reproduce them using pencil and paper.

The results show that looking at the cartoons activated visual processing areas of the brain, that are known to be responsive to faces, especially if the cartoon was displayed at the same time as they produced the drawing. But when the subjects had to wait before drawing, there was no maintained activity in these areas. This suggests that the memory of the cartoon face is transformed into a different, non-visual form. Instead, there was increased activity in parietal cortex and frontal areas consistent with the encoding and retention of the spatial information as an action plan, representing a series of targets for ocular fixation or as spatial targets for the drawing action.

In other experiments, the scientists have also precisely measured where people look as they perform these tasks. They conclude that facial information is captured during a sequence of eye movements towards certain features of the cartoons, and the information is stored as spatial locations for subsequent eye and hand actions. The drawing process then recreates these spatial features as the eye and hand are guided by the retained action plans. Finally their work shows that brain imaging, in combination with eye and hand tracking, can dissect complex visually guided tasks into separate functional stages.

This work is an important step towards a full understanding of how sensory information is used to guide actions. The implications are that the brain translates sensory information into action plans as soon possible, rather than maintaining and later copying from a mental image.


'/>"/>

Contact: Valeria Brancolini
v.brancolini@elsevier.com
39-028-818-4260
Elsevier
Source:Eurekalert

Related medicine news :

1. Boomers Embrace Brain Fitness Craze
2. Brain Hemorrhage Might Explain Natasha Richardsons Death
3. Georgia State/Georgia Tech Center for Advanced Brain Imaging to expand brain, mind research
4. Brain Hemorrhage May Explain Natasha Richardsons Condition
5. Study finds how brain remembers single events
6. Kids Brain Trust: A New Nonprofit Gives Parents Hope of Defeating Autism
7. Study finds biological clue in brain tumor development
8. Brain abnormality found in boys with attention deficit hyperactivity disorder
9. Musicians Brain Waves Are Also in Tune
10. Alzheimers Tied to Shrinkage in Brain Area
11. New Mexico Doctors Now Treating Brain and Prostate Cancer With RapidArc Radiotherapy Technology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/19/2017)... , ... January 19, 2017 , ... ... tech innovators, engineers, and scientists from around the world, announces the launch of ... a quick and easy portal to research breakthroughs and trending news, vital information ...
(Date:1/19/2017)... ... January 19, 2017 , ... ... has recently unveiled impressive transportable capabilities with their iMedHD2™ Portable Teleultrasound ... extension to RMT technology that delivers HD, dynamic, streaming ultrasound images and video ...
(Date:1/19/2017)... ... January 19, 2017 , ... WholeHealth is announcing ... Drs. Alexander Paziotopoulos, Andrew Petersen and Trish Henrie-Barrus will be present Saturday and ... leading recovery program. , “We know it’s easy to get carried away ...
(Date:1/19/2017)... ... January 19, 2017 , ... Dr. ... Board of Dermatology and fellowship trained Mohs and cosmetic surgeon. After extensive dermatology ... Dr. Li completed his internship in internal medicine at the Emory University and ...
(Date:1/19/2017)... ... January 19, 2017 , ... Bio-Optronics Inc. is proud ... CTMS workflow designed to seamlessly integrate and streamline the way researchers prepare and ... page, maximizing usability and improving efficiency significantly for users – a first in ...
Breaking Medicine News(10 mins):
(Date:1/19/2017)... The Global Therapy Partnering Terms and Agreements ... deals and agreements entered into by the world,s leading ... Top deals by value - Deals listed by company ... The report provides understanding and access to the partnering ... healthcare companies. The report provides an analysis of ...
(Date:1/19/2017)... , Jan. 19, 2017 Many patients ... for their medication when a pharmacy just a few ... prescription.  To alleviate this problem Medicationdiscountcard.com has ... to see exactly how much their medication will cost ... Made Easy Medicationdiscountcard.com ...
(Date:1/19/2017)... , Jan. 19, 2017  Abaxis, Inc. (NasdaqGS: ... blood analysis instruments and consumables for the medical and ... discuss its financial results for the third quarter fiscal ... be at 4:15 p.m. ET on Thursday, January 26, ... third quarter fiscal year 2017 after the market closes ...
Breaking Medicine Technology: