Navigation Links
Eyes are windows to the soul -- and evolution
Date:3/20/2014

ITHACA, N.Y. Why do we become saucer-eyed from fear and squint from disgust?

These near-opposite facial expressions are rooted in emotional responses that exploit how our eyes gather and focus light to detect an unknown threat, according to a study by a Cornell University neuroscientist.

Media note: Images, video and research paper available at: https://cornell.box.com/EyeEvolution

Our eyes widen in fear, boosting sensitivity and expanding our field of vision to locate surrounding danger. When repulsed, our eyes narrow, blocking light to sharpen focus and pinpoint the source of our disgust.

The findings by Adam Anderson, professor of human development in Cornell's College of Human Ecology, suggest that human facial expressions arose from universal, adaptive reactions to environmental stimuli and not originally as social communication signals, lending support to Charles Darwin's 19th century theories on the evolution of emotion.

"These opposing functions of eye widening and narrowing, which mirror that of pupil dilation and constriction, might be the primitive origins for the expressive capacity of the face," said Anderson. "And these actions are not likely restricted to disgust and fear, as we know that these movements play a large part in how perhaps all expressions differ, including surprise, anger and even happiness."

Anderson and his co-authors described these ideas in the paper, "Optical Origins of Opposing Facial Expression Actions," published in the March 2014 issue of Psychological Science.

Looks of disgust result in the greatest visual acuityless light and better focus; fearful expressions induce maximum sensitivitymore light and a broader visual field.

"These emotions trigger facial expressions that are very far apart structurally, one with eyes wide open and the other with eyes pinched," said Anders
'/>"/>

Contact: Melissa Osgood
mmo59@cornell.edu
607-255-2059
Cornell University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Feel-good glass for windows
2. Fingerprint Cards (FPC) Demonstrates Fingerprint Biometric Touch Sensor for Microsoft Windows 8.1
3. Bio-inspired design may lead to more energy efficient windows
4. Leading evolutionary scientist to discuss how genome of bacteria has evolved
5. An evolutionary surprise
6. Ancient Egyptian cotton unveils secrets of domesticated crop evolution
7. Did climate change shape human evolution?
8. A University of Tennessee professors hypothesis may be game changer for evolutionary theory
9. Analysis of stickleback genome sequence catches evolution in action
10. Study shows unified process of evolution in bacteria and sexual eukaryotes
11. Rapid method of assembling new gene-editing tool could revolutionize genetic research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2015)... Minn. , June 23, 2015   ... company that supports the entire spectrum of clinical ... iMedNet ™ , the company,s intuitive, ... been awarded a Silver 2015 Stevie® Award by ... Health Products & Services Website category.  The American ...
(Date:6/18/2015)... June 18, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market announces that its Wocket® ... on "Money on the Mark", scheduled to air on WABC ... June 20 th . The broadcast air- ... 7:00 to 8:00pm EST. NXT-ID, Inc.,s CEO Gino Pereira ...
(Date:6/16/2015)... , June 16, 2015 /CNW Telbec/ - handyem ... centralized around the incorporation of handyem,s HPC-150 portable ... laboratory, the Mo-POD™. This unprecedented model of mobile ... Conference at the Pennsylvania ... June 15 th to 18 th ...
Breaking Biology News(10 mins):MedNet Solutions' iMedNet eClinical Wins Silver Stevie Award 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 2NXT-ID, Inc.'s CEO Gino Pereira Talks About the Wocket Smart Wallet on WABC Radio, New York City, June 20th 3handyem and FlowMetric Diagnostics announce their partnership in the development of Flow Cytometry- Based Solutions in diagnostic capabilities 2handyem and FlowMetric Diagnostics announce their partnership in the development of Flow Cytometry- Based Solutions in diagnostic capabilities 3
... -- A two-year study of college students at ... learn better and develop higher-level skills by participating ... teaching methods. Elsa Snchez and Richard Craig, ... surveyed students enrolled from 2003-2005 in their Plant ...
... -- We love it fresh, canned and frozen. It,s grown ... by the American Society of Horticultural Science, adds up to ... In other words, sweet corn is big business. Fresh ... July, with only ten percent of the annual volume marketed ...
... Two common dietary molecules found in legumes and ... of radiation, researchers from the University of Maryland ... human skin cells and a skin cancer-prone mouse ... damaging radiation found in sunlight, the team reported ...
Cached Biology News:Teamwork improves learning and career success 2How sweet is it? 2Antioxidants could provide all-purpose radiation protection 2Antioxidants could provide all-purpose radiation protection 3
(Date:6/29/2015)... and Manhattan, KS (PRWEB) , ... June 29, ... ... acquired US PATENT 7736892 B2. Under the terms of the agreement, MediVet will ... Cord Matrix Stem Cells (UCMSCs). MB-007 is currently in pre-clinical development as a ...
(Date:6/29/2015)... Md. , June 29, 2015  Neuralstem, Inc. ... cell technology to develop small molecule and cell therapy ... it has been approved for listing on the NASDAQ ... stock will continue to trade on the NYSE MKT ... on the NASDAQ Capital Market is expected to commence ...
(Date:6/29/2015)... 2015 Elsevier , a ... and services, today announced the highlights of its journal ... Journal Citation Reports® (JCR) published by Thomson Reuters, Elsevier ... 2013 to 2014, ahead of the aggregate across other ... in 62 subject categories, up from 61 in 2013. ...
(Date:6/26/2015)... STRASBURG, Va. , June 26, 2015  A ... release two products made with synthetic rhino horn: beer ... in Vietnam . In response to ... oppose the manufacture, marketing and sale of synthetic rhino ... (IRF) and Save the Rhino International ...
Breaking Biology Technology:MediVet Biologics Acquires Exclusive Patent License from Kansas State University 2MediVet Biologics Acquires Exclusive Patent License from Kansas State University 3Neuralstem, Inc. Announces Approval for Listing on the NASDAQ Capital Market 2Neuralstem, Inc. Announces Approval for Listing on the NASDAQ Capital Market 3Elsevier Announces 2014 Citation Impact Highlights 2Elsevier Announces 2014 Citation Impact Highlights 3Rhino Experts Oppose Synthetic Rhino Horn as Solution to Poaching Crisis 2
... chemists from the University of Valencia (UV) has confirmed that ... remains at Lixus, in Morocco, was pine resin. The scientists ... could be fragments of material used for iron-working. In ... sealed amphora among the remains at Lixus, an ancient settlement ...
... , Feb. 5 Transgenomic, Inc. (OTC Bulletin Board: TBIO) ... will be presenting a corporate overview of the company at the 12th ... 11:30 a.m. EST on Tuesday, February 9, 2010 ... , About Transgenomic, Inc. , Transgenomic, Inc. ...
... and PALO ALTO, Calif. , Feb. 5 ... Philip Haworth , Ph.D., chief executive officer, will deliver a corporate ... Conference.  The conference will be held February 8-9, 2010 at ... will take place at 11:00 a.m. Eastern on Monday, ...
Cached Biology Technology:Chemical analyses uncover secrets of an ancient amphora 2Transgenomic Presents at 12th Annual BIO CEO & Investor Conference 2Silence Therapeutics to Present at 12th Annual BIO CEO & Investor Conference 2Silence Therapeutics to Present at 12th Annual BIO CEO & Investor Conference 3
Curcumin is an extract of turmeric root with antioxidant, anti-tumor promoter, and anti-inflammatory properties. Curcumin inhibits the induction of NOS in macrophages....
UGT1A6 (D-20)...
... is the smallest electronic pressure controller available ... Parker configured this unit specifically for the ... Used in carrier gas flow control, microfluidic ... and hydro-dynamic focusing, the OEM-EPC offers external ...
... Thrust Slide is designed for heavy duty ... limited and substantial side-loading is present. Standard ... millions of trouble-free cycles even in high ... or recirculating ball bearings , Optional corrosion ...
Biology Products: