Welcome to The Visible Embryo

Home- - -History-- -Bibliography- -Pregnancy Timeline- --Prescription Drugs in Pregnancy- -- Pregnancy Calculator- --Female Reproductive System- News Alerts -Contact

Welcome to The Visible Embryo, a comprehensive educational resource on human development from conception to birth.

The Visible Embryo provides visual references for changes in fetal development throughout pregnancy and can be navigated via fetal development or maternal changes.

The National Institutes of Child Health and Human Development awarded Phase I and Phase II Small Business Innovative Research Grants to develop The Visible Embryo. Initally designed to evaluate the internet as a teaching tool for first year medical students, The Visible Embryo is linked to over 600 educational institutions and is viewed by more than ' million visitors each month.

WHO International Clinical Trials Registry Platform
The World Health Organization (WHO) has created a new Web site to help researchers, doctors and patients obtain reliable information on high-quality clinical trials. Now you can go to one website and search all registers to identify clinical trial research underway around the world!




Pregnancy Timeline

Prescription Drug Effects on Pregnancy

Pregnancy Calculator

Female Reproductive System

Contact The Visible Embryo

News Alerts Archive

Disclaimer: The Visible Embryo web site is provided for your general information only. The information contained on this site should not be treated as a substitute for medical, legal or other professional advice. Neither is The Visible Embryo responsible or liable for the contents of any websites of third parties which are listed on this site.
Content protected under a Creative Commons License.

No dirivative works may be made or used for commercial purposes.

Return To Top Of Page
Pregnancy Timeline by SemestersFemale Reproductive SystemFertilizationThe Appearance of SomitesFirst TrimesterSecond TrimesterThird TrimesterFetal liver is producing blood cellsHead may position into pelvisBrain convolutions beginFull TermWhite fat begins to be madeWhite fat begins to be madeHead may position into pelvisImmune system beginningImmune system beginningPeriod of rapid brain growthBrain convolutions beginLungs begin to produce surfactantSensory brain waves begin to activateSensory brain waves begin to activateInner Ear Bones HardenBone marrow starts making blood cellsBone marrow starts making blood cellsBrown fat surrounds lymphatic systemFetal sexual organs visibleFinger and toe prints appearFinger and toe prints appearHeartbeat can be detectedHeartbeat can be detectedBasic Brain Structure in PlaceThe Appearance of SomitesFirst Detectable Brain WavesA Four Chambered HeartBeginning Cerebral HemispheresEnd of Embryonic PeriodEnd of Embryonic PeriodFirst Thin Layer of Skin AppearsThird TrimesterDevelopmental Timeline
Click weeks 0 - 40 and follow fetal growth
Search artcles published since 2007

September 21, 2012--------News Archive Return to: News Alerts

Building on past evidence, Dinstein and his collaborators have shown that
multiple sensory systems within autistic individuals show noisy responses,
suggesting that widespread behavioral abnormalities could arise from a
simple dysfunction in neural processing emerging during development.

WHO Child Growth Charts


Autism Symptoms Could Arise From Unreliable Neural Responses

Diverse symptoms associated with autism could be explained by unreliable activity of neurons in the brain in response to basic, nonsocial sensory information

According to a study published by Cell Press on September 19th in the journal Neuron.

The new findings suggest that autism
is a disorder of general neural processing
and could potentially provide an explanation
for the origins of a range of psychiatric
and neurological disorders.

"Within the autism research community, most researchers are looking for either a dysfunctional brain region or inadequate connections between brain regions," says lead study author Ilan Dinstein of Carnegie Mellon University. "We're taking a different approach and thinking about how a general characteristic of the brain could be different in autism—and how that might lead to behavioral changes."

Autism is a developmental disorder marked by social deficits, communication problems, and repetitive behaviors. Two previous studies suggested that the neural responses of individuals with autism are more variable than those of control subjects during visual and motor tasks.

Building on this past evidence, Dinstein and his collaborators have now shown that multiple sensory systems within these individuals show noisy responses, suggesting that widespread behavioral abnormalities could arise from a basic dysfunction in neural processing that emerges during development.

In the study, adults with autism participated in functional magnetic resonance imaging experiments in which their brain activity was measured under three different conditions: while they watched moving dots on a screen, listened to tone beeps, and felt air puffs on their hands. The neural responses to all three types of sensory information were less reliable across trials in individuals with autism than in control subjects.

The findings suggest that autism could result
from fundamental defects in general neural processing
rather than a collection of independent problems
that affect different brain regions.

"Unreliable neural activity is a general property
that could have a profound impact on the function
of many brain systems and could underlie a range
of cognitive and social abnormalities.

So we think that this problem could play a role
not only in autism, but also potentially in other
disorders such as epilepsy and schizophrenia."

Marlene Behrmann, author
Carnegie Mellon University

Dinstein et al.: "Unreliable evoked responses in autism."

Video: Marlene Behrmann, Professor of Psychology, and IIan Dinstein, Postdoctoral Researcher, from Carnegie Mellon University's Department of Psychology discuss their study "Autistic Adults have Unreliable Neural Sensory Responses" publishing in Neuron.

Original article: http://www.eurekalert.org/pub_releases/2012-09/cp-asc091412.php