Featured Research

from universities, journals, and other organizations

Infants' hemodynamic responses to happy and angry facial expressions

Date:
November 8, 2010
Source:
National Institute for Physiological Sciences
Summary:
Scientists found that the hemispheric differences in the temporal area overlying superior temporal sulcus when processing positive (happy) and negative (angry) facial expressions in infants.

Happy and angry facial expressions. Researchers found that the hemispheric differences in the temporal area overlying superior temporal sulcus (STS) when processing positive (happy) and negative (angry) facial expressions in infants.
Credit: iStockphoto/Dean Turner

Japanese research group led by Prof. Ryusuke Kakigi and Dr. Emi Nakato (National Institute for Physiological Sciences: NIPS) and Prof. Masami K Yamaguchi (Chuo University) found that the hemispheric differences in the temporal area overlying superior temporal sulcus (STS) when processing positive (happy) and negative (angry) facial expressions in infants.

Their finding was reported in NeuroImage.

Near infrared spectroscopy (NIRS) is an optical imaging technique that can measure changes in the concentrations of oxyhemoglobin (oxy-Hb), deoxyhemoglobin (deoxy-Hb), and total hemoglobin (total-Hb) as an index of neural activation. Recently, NIRS has been widely used to reveal the brain activity for cognitive processing in awake infants.

Neuroimaging studies in adults has revealed that the STS is involved in the processing of facial expressions, while infants' brain regions involved in perceiving facial expressions has not been investigated. To examine whether the STS is responsible for the perception of facial expressions in infants, the research group measured the hemodynamic responses in STS during the perceptions of happy and angry faces with NIRS.

The findings showed that:

1) the hemodynamic responses elicited by the perception of happy faces increased continuously even after the happy face stimuli disappeared, whereas of the neural response to angry faces decreased much more rapidly when the presentation of angry faces ceased, and that

2) the left temporal area of infants' brain was significantly activated for happy faces, while the right temporal area was activated for angry faces.

The research group said, "the different hemodynamic responses between the perception of positive and negative expressions in infants is related to the different biological meanings of positive and negative facial expressions; a positive facial expression can convey a pleasant meaning, while a negative facial expression can be unpleasant or convey danger. The hemispheric lateralization of neural responses to facial expressions develops by the age of 6 months."


Story Source:

The above story is based on materials provided by National Institute for Physiological Sciences. Note: Materials may be edited for content and length.


Journal Reference:

  1. Emi Nakato, Yumiko Otsuka, So Kanazawa, Masami K. Yamaguchi, Ryusuke Kakigi. Distinct differences in the pattern of hemodynamic response to happy and angry facial expressions in infants — A near-infrared spectroscopic study. NeuroImage, 2010; DOI: 10.1016/j.neuroimage.2010.09.021

Cite This Page:

National Institute for Physiological Sciences. "Infants' hemodynamic responses to happy and angry facial expressions." ScienceDaily. ScienceDaily, 8 November 2010. <www.sciencedaily.com/releases/2010/11/101105124237.htm>.
National Institute for Physiological Sciences. (2010, November 8). Infants' hemodynamic responses to happy and angry facial expressions. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2010/11/101105124237.htm
National Institute for Physiological Sciences. "Infants' hemodynamic responses to happy and angry facial expressions." ScienceDaily. www.sciencedaily.com/releases/2010/11/101105124237.htm (accessed August 20, 2014).

Share This




More Mind & Brain News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Do More Wedding Guests Make A Happier Marriage?

Do More Wedding Guests Make A Happier Marriage?

Newsy (Aug. 20, 2014) — A new study found couples who had at least 150 guests at their weddings were more likely to report being happy in their marriages. Video provided by Newsy
Powered by NewsLook.com
Charter Schools Alter Post-Katrina Landscape

Charter Schools Alter Post-Katrina Landscape

AP (Aug. 20, 2014) — Nine years after Hurricane Katrina, charter schools are the new reality of public education in New Orleans. The state of Louisiana took over most of the city's public schools after the killer storm in 2005. (Aug. 20) Video provided by AP
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) — Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com
Kids' Drawings At Age 4 Linked To Intelligence At Age 14

Kids' Drawings At Age 4 Linked To Intelligence At Age 14

Newsy (Aug. 19, 2014) — A study by King's College London says there's a link between how well kids draw at age 4 and how intelligent they are later in life. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins