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Introduction: Despite their importance in reward, motivation, and learning there is only sparse anatomical knowledge about the human medial forebrain bundle (MFB) and the connectivity of the ventral tegmental area (VTA). A thorough anatomical and microstructural description of the reward related PFC/OFC regions and their connection to the VTA - the superolateral branch of the MFB (slMFB) - is however mandatory to enable an interpretation of distinct therapeutic effects from different interventional treatment modalities in neuropsychiatric disorders (DBS, TMS etc.). This work aims at a normative description of the human MFB (and more detailed the slMFB) anatomy with respect to distant prefrontal connections and microstructural features.
Methods and material: Healthy subjects (n = 55; mean age SD, 40 10 years; 32 females) underwent high resolution anatomical magnetic resonance imaging including diffusion tensor imaging. Connectivity of the VTA and the resulting slMFB were investigated on the group level using a global tractography approach. The Desikan/Killiany parceling (8 segments) of the prefrontal cortex was used to describe sub-segments of the MFB. A qualitative overlap with Brodmann areas was additionally described. Additionally, a pure visual analysis was performed comparing local and global tracking approaches for their ability to fully visualize the slMFB.
Results: The MFB could be robustly described both in the present sample as well as in additional control analyses in data from the human connectome project. Most VTA- connections reached the superior frontal gyrus, the middel frontal gyrus and the lateral orbitofrontal region corresponding to Brodmann areas 10, 9, 8, 11, and 11m. The projections to these regions comprised 97% (right) and 98% (left) of the total relative fiber counts of the slMFB.
Discussion: The anatomical description of the human MFB shows far reaching connectivity of VTA to reward-related subcortical and cortical prefrontal regions - but not to emotion-related regions on the medial cortical surface - realized via the superolateral branch of the MFB. Local tractography approaches appear to be inferior in showing these far-reaching projections. Since these local approaches are typically used for surgical targeting of DBS procedures, the here established detailed map might - as a normative template - guide future efforts to target deep brain stimulation of the slMFB in depression and other disorders related to dysfunction of reward and reward-associated learning.
The anterior cruciate ligament (ACL) consists of two major fiber bundles, namely the anteromedial and posterolateral bundle. When the knee is extended, the posterolateral bundle (PL) is tight and the anteromedial (AM) bundle is moderately lax. As the knee is flexed, the femoral attachment of the ACL becomes a more horizontal orientation; causing the AM bundle to tighten and the PL bundle to relax. There is some degree of variability for the femoral origin of the anterome-dial and posterolateral bundle. The anteromedial bundle is located proximal and anterior in the femoral ACL origin (high and deep in the notch when the knee is flexed at 90 degrees ); the posterolateral bundle starts in the distal and posterior aspect of the femoral ACL origin (shallow and low when the knee is flexed at 90 degrees ). In the frontal plane the anteromedial bundle origin is in the 10:30 clock position and the postero-lateral bundle origin in the 9:30 clock position. At the tibial insertion the ACL fans out to form the foot region. The anteromedial bundle insertion is in the anterior part of the tibial ACL footprint, the posterolateral bundle in the posterior part. While the anteromedial bundle is the primary restraint against anterior tibial translation, the posterolateral bundle tends to stabilize the knee near full extension, particularly against rotatory loads.
Know Yourself engages young minds in understanding anatomy, physiology, and psychology. These books set a foundation for discovering how the body functions, building confidence, and making healthy decisions for yourself. Our pedagogical approach includes a variety of learning modalities, spiral curriculum design, and culturally responsive and representative content.
Know Yourself has had the great fortune of working with a team of parents, educators, writers, doctors, scientists, artists, researchers and filmmakers in creating this original, educational, award-winning content. The list of contributors who have helped realize this vision is long and illustrious. We thank them all for their time, their passion, and their expertise in helping make Know Yourself a reality. We have only just begun!
The Anatomy Bundle includes 12 weeks of hands-on science projects and activities that will enrich any study of the human body. Students will explore a different anatomy topic each week, including the systems of the body, human tissues, hormones, skeletal groups, and the senses, among other anatomy topics. (*Single Family & Multi-Family options available)
The Anatomy Bundle includes 12 weeks of hands-on science projects and activities that will enrich any study of the human body. Students will explore a different anatomy topic each week, including the systems of the body, human tissues, hormones, skeletal groups, and the senses, among other anatomy topics.
Each open-and-go bundle includes a Parent Guide rich with discussion starters, project instructions, scientific background information, connections to Scripture, and extra resources. The bundle also includes a consumable Student Lab Notebook where students can brainstorm, record data, and interact with Scripture. Projects are designed for ages 6-12, but suggestions for scaling the activities are included. Single-Family, Multi-Family & Co-op License options available for purchase.
Human anatomy will be taught using a systemic approach and emphasizing the connection between function and structure as it relates to physiological conditions and diseases. To this end, lectures will integrate elements of embryology and histology. Modern imaging methods will be introduced as well. Selected topics of topographic anatomy will be also examined, including head/neck and pelvis. This course is suitable for advanced undergraduate and/or postbac students planning a career in medicine and biomedical research and will be taught at a level of complexity that is similar to courses offered at most medical schools. Other biomedical researchers who seek to better understand the structural underpinnings of normal and pathologic functions of the human body may also find the course useful.
College degree; basic knowledge of cell biology. If you are unsure that you meet the prerequisite requirements, please contact regi...@faes.org and provide information about your course of interest and background knowledge.
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In OS X, shared resources are packaged using standard frameworks and umbrella frameworks. Both types of framework feature the same basic structure and can contain resources such as a shared library, nib files, image files, strings files, information property lists, documentation, header files, and so on. Umbrella frameworks add minor refinements to the standard framework structure, such as the ability to encompass other frameworks.
Frameworks are packaged in a bundle structure. The framework bundle directory ends with the .framework extension, and unlike most other bundle types, a framework bundle is presented to the user as a directory and not as a file. This openness makes it easy for developers to browse any header files and documentation included with the framework.
Framework bundles use a bundle structure different from the bundle structure used by applications. The structure for frameworks is based on an earlier bundle format, and allows for multiple versions of the framework code and header files to be stored inside the bundle. This type of bundle is known as a versioned bundle. Supporting multiple versions of a framework allows older applications to continue running even as the framework binary continues to evolve.
When you build a new framework project in Xcode, the build environment creates a versioned bundle structure for you automatically. Listing 1 shows the basic directory structure of the resulting bundle.
In this listing, the Versions directory is the only real directory at the top level of the bundle. Both MyFramework and Resources are symbolic links to items in Versions/A. The reason for the symbolic links is that directory Versions/A contains the actual contents of the framework. It contains both the executable and the resources used by the framework.
Important: For the linker to find and link the dynamic library, the name of the framework (without the .framework extension), the symbolic link, and the dynamic library must be the same.
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