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User: enzymebme |
From axons to tracts: A journey through the brain's wiring Created by Luis Concha and Daniel Torres University of Alberta, Canada. Please note: This work is licensed using Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. Please email me if you would like to use this video. Note: Send email to my gmail account (below). lconcha __ at ___ gmail.com http://lconcha.googlepages.com/ The complex circuitry interconnecting different areas in the brain, known collectively as white matter, is composed of millions of axons organized into fascicles and bundles. Upon macroscopic examination of sections of the brain, it is difficult to discern the orientation of the fibers. The same is true for conventional imaging modalities. However, recent advancements in magnetic resonance imaging (MRI) make such task possible in a live subject. By sensitizing an otherwise typical MRI sequence to the diffusion of water molecules it is possible to measure their diffusion coefficient in a given direction1. Normally, the axonal membrane and myelin sheaths pose barriers to the movement of water molecules and, thus, they diffuse preferentially along the axon2. Therefore, the direction of white matter bundles can be elucidated by determining the principal diffusivity of water. The three-dimensional representation of the diffusion coefficient can be given by a tensor and its mathematical decomposition provides the direction of the tracts3; this MRI technique is known as diffusion tensor imaging (DTI). By connecting the information acquired with DTI, three-dimensional depictions of white matter fascicles are obtained4. The virtual dissection of white matter bundles is rapidly becoming a valuable tool in clinical research. Our journey begins with a transverse section of tightly packed axons as seen through light microscopy. Although represented as a two-dimensional "slice", we see that these axons in fact resemble tubes. A simulation of water molecules diffusing randomly inside the axons demonstrates how the membranes and myelin hinder their movement across them and shows the preferred diffusion direction --along the axons. The tracts depicted through DTI slowly blend in and we ride along with them. As we zoom out even more, we realize that it is a portion of the corpus callosum connecting the two sides of the brain we were traveling on and the great difference in relative scale of the individual axons becomes evident. The surface of the brain is then shown, as well as the rest of the white matter bundles--a big, apparently chaotic tangle of wires. Finally, the skin covers the brain. With the exception of the simulated water molecules, all the data presented in the animation is obtained through microscopy and MRI. Computer algorithms for the extraction of the cerebral structures and a custom-built graphics engine make our journey through the brain's anatomy possible in a living person. Micrograph courtesy of Dr. Christian Beaulieu, University of Alberta. Music by Mario Mattioli. References: 1. Stejskal, E.O., et al., J. Chem. Phys., 1965. 42: 2. Beaulieu, C., NMR Biomed., 2002. 15:435-55. 3. Basser, P.J., et al., J. Magn. Reson. B, 1994. 103:247-54. 4. Mori, S., et al., NMR Biomed., 2002. 15:468-80. Tags: brain MRI diffusion tractography axons neurons CG 3D cgfx |
User: UnculturedProject |
Hank, John, and a Journey Through the Chittagong Hill-Tracts This is what I mean when I say "YouTube with a Purpose". It's thanks to YouTube that John Green (in Indianapolis) and Hank Green (in Missoula, Montana) were able to connect to me here in Dhaka, Bangladesh. Using a donation from Hank, I was able to help a needy family in a remote (and military controlled) region of Bangladesh called the Chittagong Hill-Tracts. The journey was quite long and this video helps the highlight how remote this region is. If this is the first time you've seen one of my videos, here are the basics: I'm not an NGO, charity, or someone looking to become a YouTube celebrity. This is just my way of inspiring others, paying it forward, and changing the conversation about global poverty. You can learn more about my work at my website: http://uncultured.com I can't thank Hank and John enough for all the support they've lent. Their channel, of course, is: http://youtube.com/vlogbrothers To keep this video short, I had to cut a lot out. Here are is the playlist of deleted scenes for this video: http://www.youtube.com/view_play_list?p=A1F0B49B1177351C The internet connection here in Bangladesh is horrible for doing stuff like uploading videos to YouTube. It takes a lot of hard work and I couldn't do it without a lot of help from friends. This video was uploaded with the help of my friend Alan. Check his channel out here: http://youtube.com/fallofautumndistro For a list of recommended charities, check out: http://uncultured.com/charities If you'd like to make a donation to me, please read this first: http://uncultured.com/donations Thanks to Stefan D and Brad Sucks for lending their music to this video. Stefan D http://www.furaxe.qc.ca/stefand/ Brad Sucks http://www.bradsucks.net This video is licensed under the Creative Commons (BY-SA-NC). Tags: UnculturedProject vlogbrothers Hank John Shawn Nerdfighting Nerdfighters Bangladesh Chittagong Poverty Poor |
User: prodigaleight |
Gospel Tracts | Simple Witness | Story of Mr Genor http://www.jesus-international.com This is the encouraging testimony of the impact that one little old man, Mr Genor made through a heartfelt commitment to share a simple salvation message with ten people a day by giving them a gospel tract. Tags: gospel tracts christian george street sydney salvation soul winning Mr Genor tract jesus |
User: thestudent |
Rat Population Boom in the Chittagong Hill-Tracts Every few decades there is a huge boom in the rat population in the Chittagong Hill-Tracts in Bangladesh. As were walking to a rural village, we found some Bamboo, Rick Davis (a science teacher at the American International School in Dhaka) explains why this increase in the rat population happens every few decades. This is a deleted scene for my video on my main channel, you can check that video out here: http://www.youtube.com/watch?v=olq_EnaYvFQ Tags: Bangladesh Rats UnculturedProject Bamboo thestudent Chittagong Hill-Tracts Hill Tracts Rural Population Rat |
User: fourbyfourblazer |
Handing out gospel tracts - Hollywood Blvd http://thelawmanchronicles.blogspot.com/ Tony Miano & Mike Dunugan handing out million dollar bill gospel tracts on Hollywood Blvd. Tags: Evangelism Gospel Tracts witnessing LivingWaters WOTM good person test way of the master |
User: ChrisHobeck |
Passing Out Tracts -- Witnessing One-to-One Darrel Rundus from the Great News Network shows us how to hand out gospel tracts. http://www.thegreatnews.com/ Tags: God Jesus Christ Bible evangelism heaven hell Darrel Rundus Great News Network GNN Kirk Cameron Ray Comfort tract track |
User: CrossReach |
Dropping Gospel Tracts (AKA: The Chicken Drop) Karl Corcoran goes into Burger King to drop tracts on each table. Could you do this? Of course you could! It's easy!! See our other Chicken drop videos for more. Training in evangelism. Learning how to street witness. Preaching the Gospel. How to use tracts. Using initiative. Having fun! sharing the Lord with unbelievers Presenting the Gospel open air Preaching the gospel The use of apologetics what is apologetics? Proclaiming the message of Christ crucified How to evangelize Extreme evangelism Calvary Chapel Outreach Evangelical Christians Unashamed to the gospel Witnessing tips Leading someone to Christ Sinner's Prayer Invitation to accept Christ ask Jesus to come into your heart surrendering life to Jesus Christ making a decision come to know the Lord The Great Commission Evangelism approach Roman's Road Four 4 Spiritual laws Evangelism explosion apologetics approach law approach emotional approach scientific evidence archaeological evidence historical evidence evidence of the conscience prophetic evidence evidence for God's existence Engaging the culture Culture war Harvest Greg Laurie Campus Crusade for Christ Bill Bright Crusade Billy Graham Calvary Chapel Costa Mesa Hosanna Chapel Calvary Chapel Fort Lauderdale Crosspoint Dublin Calvary Chapel Beachside Reality Carpenteria Reality LA Applegate Christian Fellowship Calvary Chapel Saving Grace Brian Brodersen Broderson Chuck Smith Raul Ries Mike McIntosh Bill Gatlin Steve Mays Don McClure Wayne Taylor Britt Merrick Tim Chaddick Jon Courson Bob Coy Trent Douglas Way of the Master Living Waters Emeal Zwayne Mark Spence Todd Friel Charles Spurgeon Leonard Ravenhill G Campbell Morgan Matthew Henry Johnathan Edwards Oswald Chambers George Whitefield Hudson Taylor Saint Patrick Ireland Dublin Baile Atha Cliath Cork Corcaigh Tipperary Tiobraid Arann Galway Galliabh interact interaction converse conversation confront confrontation explain explanation transition debate discuss discussion argue argument contradict contradiction compromise condemn condemnation convict conviction contrite contrition realize recognize repent repentance repenting recieve convert conversion agree agreement invite invitation encourage fellowship Cosmological argument Moral argument moral values morality conscience Christmas baby Bethlehem Nazareth Carpenter Galilee Judea Jerusalem Messiah Messiach Yeshua Jeshua Jesus Jew Jewish preacher miracle worker teacher prophet perfect God's son savior logos lord crucified crucifixion crucify scourged scourging passion of the Christ cross crown of thorns tomb stone resurrection resurrect risen ascend ascended assention salvation born again Things not to say Examining the evidence On fire Christian lukewarm Christian backslidden Christian good person test unbeliever power of prayer belief system organized religion Christianity is reasonable rational logical Logic and reasoning Europe Europa European union EU Tags: tract evangelism evangelize witness open air preaching Dublin Ireland Jesus Christ Burger King CrossReach |
User: excatholics |
Two tracts, two suicide attempts and God's awesome LOVE!! This amazing video shows just how incredible God is and how He can do absolutely anything He chooses, when He chooses, to reach out and saved unworthy sinners. His incomprehensible love is majestically demonstrated in this true story that you are about to view.... After viewing this video, you'll never look at Gospel tracts and outreach the same - guaranteed!! Tags: Street preaching gospel Bible tracts evangelism outreach England Jesus Christ salvation God Trinity suicide Heaven souls |
User: pennylaneproductions |
Chick Tracts: Pro and Con What's good (and bad) about the iconic tracts of Jack T. Chick Tags: Jack Chick tracts Catholic atheist |
User: repentandturn |
Branson, MO - Passing out Gospel Tracts Brad St. Clair is in historic downtown Branson, MO passing out gospel tracts. Tags: brad st. clair branson landing street witnessing gospel tracts way of the master kirk cameron ray comfort evangelism |
User: bob2779 |
Gospel Tracts Does tract evangelism work? Are the new anointed tracts Tim's solution for reaching his neighbors? Tags: tracts bible evangelism church religion humor Christian neighbor tract |
User: FartheadOgre |
Aura Noir Deep Tracts of Hell (Live in Holland 1998) From their 1998 full length Deep Tracts of Hell I can scarcely lay claim to flesh. Though it is dreamed for, wept for. And it shines like dark gems. ...It is the noise and the dancing, And their joyless hearts. And all the pleasures one might have. Derelict tracts of hell. Then all these slices came through to my hands. To erupt in welcoming darkness. And it shines like streams of pain. ...It is the hearse and the vulture And their swollen yarn. And all the breath to mourn them with. This is the tune of sparks, The tone of relentlessness. The spiral scar. This is the wounds that sneers, The trance of creedence. You are my art. Tags: Aggressor Apollyon Blasphemer Aura Noir Sodom Kreator Cadaver Inc. Dodheimsgard Thrash Beer Sex Bathory VBE |
User: pastorsteveathope |
The Drop (The way chickens hand out Gospel Tracts) See title Tags: tracts gospel witness evangelize |
User: here2go |
Tracts from the Ontodungeon Ok I admit it, I am not Claude Lelouch, The Duds are not Snow Patrol, My camera was not Gyroscopically stabilized, Stoke Canon is not Paris and my old van is neither a Ferarri nor a Mercedes. Rare bit of vinyl nonetheless ~ 'Tracts from the Ontodungeon' by The Duds on Eeriephone Records EERIEPHON 001 .... it was a clear bright day but there was no warmth in the sun .... Tags: The Duds Tracts from the Ontodungeon Eeriephone Records Exeter Stoke Canon Ford Transit Van Mk2 winter morning Devon |
User: fourbyfourblazer |
Handing out Million Dollar Tracts - AMGEN Bike Tour 2008 http://www.thelawmanchronicles.blogspot.com Tags: the lawman million dollar bill gospel tracts way of master good person test |
User: excatholics |
Vivien's Box of Tracts #1 Vivien's Box of Tracts #1 Tags: Bible Gospel Tracts Christian Evangelising Open Air Outreach Street Preaching England Britain United Kingdom |
User: excatholics |
Alfred was giving tracts out in Munich, Germany so we helped Alfred was giving tracts out in Munich, Germany so we helped. Tags: Munich Germany Martin Luther Reformation Bible Street Preaching The Way of Master Gospel Tracts video blog |
User: aspie101 |
My opinion on Jack Chick tracts I give my two cents on Jack Thomas Chick. Tags: Jack Chick Tracts Publications anticatholic fraud conspericy |
User: excatholics |
Vivien's Box of Tracts #2 Vivien's Box of Tracts #2 Tags: Bible Gospel Tracts Christian Evangelising Open Air Outreach Street Preaching England Britain United Kingdom |
User: jj3dartist |
Tracts are still wrong. You should watch "Left Behind" deaf, you should watch movies called "Left Behind" part 1, 2, 3 and many more. Chick Publication ( tracts ) is VERY WRONG!!!! Tags: deaf |
User: jonbonker |
bangladesh hill-tracts where i was in spring 2007 and hopefully where i'll be going soon! Tags: bangladesh hill tracts hill-tracts jon bonker |
User: ndaher |
2007 SAICFF - Ray Comfort throws dollar tracts from balcony After speaking at the 2007 SAICFF, Ray Comfort goes up to the balcony and throws handfuls of million-dollar tracts down onto the crowd to spread them around. Tags: ray comfort tract million dollar saicff festival |
User: aouili |
Maroc Elections 2007 : Tracts à Sidi Fateh Rabat Maroc Elections 2007 : Tracts à Sidi Fateh Rabat Tags: Maroc Elections 2007 Tracts Sidi Fateh Rabat |
User: fourbyfourblazer |
Handing out Big Money Tracts - AMGEN Bike Tour 2008 http://www.thelawmanchronicles.blogspot.com Tags: The Lawman big money 100 dollar gospel tracts way of the master livingwaters |
User: gregkedro |
Thursday Tracts & Discipleship Putting together tracts for some door-to-door outreach, and a quick look into some discipleship groups. Thursday night, 10 January 2008 Eastside Church, San José, Costa Rica Pastor: Greg Kedrovsky Tags: evangelism discipleship costa rica tracts |
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