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- Created by: aneeka
- Created on: 11-12-16 16:24
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- Gross neuroanatomy 2
- The primary motor area sends axons towards muscles in the body whereas primary sensory area receives axons projecting from the sensory areas.
- Alzheimer patient has a much wider sulci in brain
- MRI can measure brain structure and function. It creates a 3D image of tissues inside the body composed of voxels (volume elements). The brightness in each voxel reflects the density of the tissue in that location. The brighter the voxel, the more brain tissue in that area.
- Smaller sulcus - More grey matter - Brighter
- Voxel Based Morphometry (VBM) - compares the brightness at each voxel then uses a t-test. Certain areas of the brain are particularly affected between Alzheimer's and healthy patients.
- Brain plasticity - The ability of the brain to change structure and function in response to experience. Brain tissue areas have changed as a function of performing the task. E.g. musicians, london cab drivers
- Cellular neuroanatomy
- Neurones - Elongated, separated by synapses. They are electrically active and connected in a network.
- Glial cells - Provide structural and functional support for cells. They provide support to neurones. They regulate fuel and blood flow supply to neurones. Their activity affects BOLD signal
- The white colour in grey matter comes from fatty myelin sheath around the axons
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