Navigation Links
Speed limit on babies' vision
Date:7/14/2011

Babies have far less ability to recognize rapidly changing images than adults, according to research from the UC Davis Center for Mind and Brain. The results show that while infants can perceive flicker or movement, they may not be able to identify the individual elements within a moving or changing scene as well as an adult.

"Their visual experience of changes around them is definitely different from that of an adult," said Faraz Farzin, who conducted the work as a graduate student at UC Davis and is now a postdoctoral fellow at Stanford University.

The study, conducted with Susan Rivera, an associate professor at UC Davis, and David Whitney, an associate professor of psychology at UC Berkeley, is published online by the journal Psychological Science.

Babies are not born with all the visual abilities they need in life. Their brains gradually develop the ability to use visual information to discover their world.

Even in adults, the brain is limited in the rate at which it can keep up with changing information in a scene, Farzin said.

An adult can't recognize individual moment-to-moment changes that occur faster than every 50-70 milliseconds.

For infants, Farzin and her colleagues found that the speed limit is about half a second about 10 times slower than for adults.

To determine the speed limit on infants' perception, Farzin and her fellow researchers tracked the eye movements of a group of 6- to 15-month-olds as they were shown four flickering squares. Three squares flickered from black to white and back, and one square flickered out of phase with the others (white to black), which should draw more attention because it is the "odd man out."

Eye tracking of the infants showed that they did not spend more time looking at the out-of-phase square, meaning they could not distinguish it as being different, she said.

"It was surprising how coarse their resolution was," Farzin said.

A TV show or movie in which scenes change faster than two frames per second is probably a blur to an infant under 15 months, Farzin said.

Farzin is now extending her work to people with developmental disorders that affect visual perception, such as dyslexia, fragile X syndrome or autism. By understanding visual perception in typically developing children, she hopes to understand how and when it can go wrong.


'/>"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
Source:Eurekalert

Related biology news :

1. Evolutionary kings of the hill use good, bad and ugly mutations to speed ahead of competition
2. Family genetic research reveals the speed of human mutation
3. NCI partners with Jackson Laboratory, UC Davis to speed cancer clinical trials
4. Vitamin D increases speed of sperm cells
5. Scientists discover switch to speed up stem cell production
6. New biosensor microchip could speed up drug development, Stanford researchers say
7. Advance could speed use of genetic material RNA in nanotechnology
8. OSC, Nationwide Childrens use supercomputers to speed diagnoses
9. New technology to speed cleanup of nuclear contaminated sites
10. New report outlines restoration activities to speed seagrass recovery in the Florida Keys
11. $5.1 million Army-Md. alliance speeds university research to market
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/15/2016)... 15, 2016  Synthetic Biologics, Inc. (NYSE MKT: ... on the gut microbiome, today announced the pricing ... of its common stock and warrants to purchase ... price to the public of $1.00 per share ... from the offering, excluding the proceeds, if any ...
(Date:6/27/2016)... 2016 Research and Markets has announced the ... report to their offering. The ... to grow at a CAGR of 12.28% during the period ... an in-depth market analysis with inputs from industry experts. The report ... years. The report also includes a discussion of the key vendors ...
(Date:6/21/2016)... Columbia , June 21, 2016 ... to the new role of principal product architect ... named the director of customer development. Both will ... chief technical officer. The moves reflect NuData,s strategic ... in response to high customer demand and customer ...
Breaking Biology News(10 mins):
(Date:11/30/2016)... Mass. , Nov. 30, 2016   Merck ... that it has entered into a set of agreements ... services for Merck,s collection of genetic reagents such as ... with Evotec,s screening expertise offers an accelerated pathway to ... discovery starts with the identification of new targets, a ...
(Date:11/30/2016)... ... November 30, 2016 , ... Energetiq Technology, a world leader ... generation, ultra-bright, Laser-Driven Light Source, the EQ-77, at the MRS Fall Exhibit 2016. ... offers higher radiance and irradiance from a truly broadband white light source. The ...
(Date:11/30/2016)... ... November 30, 2016 , ... On 28 November 2016, the International Union ... nihonium (Nh), moscovium (Mc), tennessine (Ts), and oganesson (Og), respectively for element 113, ... earlier proposed by the discoverers have been approved by the IUPAC Bureau. The IUPAC ...
(Date:11/30/2016)... ... November 30, 2016 , ... ... of precision treatments for neurodegenerative diseases, today announced that all five of its ... 3, 2016) blocked propagation of toxic, prion-like forms of Amyloid beta (Aß) in ...
Breaking Biology Technology: