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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!



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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.

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Pregnancy Timeline by SemestersFetal 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 HemispheresFemale Reproductive SystemEnd of Embryonic PeriodEnd of Embryonic PeriodFirst Thin Layer of Skin AppearsThird TrimesterSecond TrimesterFirst TrimesterFertilizationDevelopmental Timeline
Click weeks 0 - 40 and follow fetal growth
Google Search artcles published since 2007
 
August 19, 2011--------News Archive

Hydrodynamics Transform Embryonic Cells Into Us
H
ydrodynamics can contribute to our understanding of how a cluster of embryonic cells can transform into an animal.

New Data on Adenine, a Crucial Building Block of Life
The five nucleic acids making up DNA are some of the few that can withstand ultraviolet light. But adenine turns out to have an extensive range of respones.


August 18, 2011--------News Archive

Pluripotent Stem Cells Developmentally Immature
Researchers have discovered that though similar, induced pluripotent stem cells are similar to embryonic stem cells, but are much more developmentally immature.

Change the Environment, Not the Child
National study finds equal benefit for children with cerebral palsy.


August 17, 2011--------News Archive

Molecular Delivery Serves Gene Therapy Cocktail
Scientists have devised a gene therapy cocktail that has the potential to treat some inherited diseases associated with "misfolded" proteins.

Children of Depressed Mothers Have a Different Brain
MRI scans show their children have an enlarged amygdala.

Discovery Likely to Spur Medicine and Human Health
Scientists have gained new insight into the relationship between two proteins that, out of balance, can prevent normal development of stem cells in the heart.


August 16, 2011--------News Archive

Study Finds New Role for Protein in Hearing
A protein involved in sound sensing in the inner ear may also play a role in transmitting sound information to the brain.

Retinoblastoma Made of Hybrid Cells
Scientists settle a century-old debate about retinoblastoma's beginnings and identify new targets for treating the childhood eye tumor.

Can Oral Care for Babies Prevent Future Cavities?
A recent study confirms the presence of bacteria associated with early childhood caries (ECC) in infant saliva.


August 15, 2011--------News Archive

Slowing the Allergic March
Researchers identify a target that could combat allergies of early childhood.

Gene Clue in the Development of Rheumatoid Arthritis
Findings will help lead to personalized therapies for common, complex illnesses characterized by abnormal immune responses.

Sight Re-Constructs Moving Objects: One by One
Our visual system groups areas of the world with similar characteristics, such as color, shape, or motion.

WHO Child Growth Charts

Although our eyes record the word as millions of pixels, “the visual system is fantastic at giving us a world that looks like objects, not pixels,” says Northwestern University psychologist Steven L. Franconeri. It does this by grouping areas of the world with similar characteristics, such as color, shape, or motion.

The process is so seamless that we feel we’re taking it all in simultaneously. But this, says a new study by Franconeri and his colleague Brian R. Levinthal, is “an illusion.” Instead, they say, that for some types of grouping, the visual system is limited by its ability to perceive only one group at a time.

The findings were just published in Psychological Science, a journal of the Association for Psychological Science.

How does this grouping work? Say you’re looking at a crowded street, with cars going every which way. Your view of each individual car is partially blocked, so that you actually see multiple “pieces” of each. Yet because those pieces move with the same direction of motion, grouping by “common fate” helps you perceive whole cars. You might feel that this grouping is happening for all the cars at once—but Levinthal and Franconeri suggest otherwise.

To demonstrate this point, the authors performed two experiments, simplifying the “car pieces” into pairs of moving dots.

In the first experiment, participants had to find the pairs that were vertically arranged among pairs that were horizontally arranged. In the second, instead of finding a group with a specific shape, they were asked to find a group among non-groups—like whole cars among scattered pieces.

The researchers conjectured that if it’s possible to perceive all groups at once, then finding one with a specific shape should be easy. If the visual system can construct only one group at a time, then this task should become progressively harder as more groups are added to the screen.

In both tasks, “people were surprisingly slow,” says Franconeri. As participants were asked to make decisions involving more groups, they took more and more time. They were limited by their one-at-a-time visual systems, which, he says, “needed to flip through the groups, at a rate of about 10 per second.”

The research, says Franconeri, offers practical information for people creating effective complex graphic systems such as charts and graphs, and even more complex visualizations, such as genomic sequences.

It also enhances science’s understanding of ordinary vision. “The visual system fools us into thinking that we process everything in rich detail, when in many cases we are processing only the most relevant pieces of the world,” says Franconeri. The new study adds another insight: “You think you’re seeing all these moving groups. But in fact you’re seeing only the group you are ‘looking at’ with your mind’s eye”—one by one by one.

For more information about this study, please contact: Steven L. Franconeri at franconeri@northwestern.edu.

The APS journal Psychological Science is the highest ranked empirical journal in psychology. For a copy of the article "Common fate grouping as feature selection" and access to other Psychological Science research findings, please contact Divya Menon at 202-293-9300 or dmenon@psychologicalscience.org.