Functional Brain Imaging |
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Page 31
... membrane permeability . Postsynaptic potentials may be either excitatory ( left ) or inhibitory ( right ) ... membrane and the relative permeability of the membrane to these ions . For real neurons , the concentration of potassium is high ...
... membrane permeability . Postsynaptic potentials may be either excitatory ( left ) or inhibitory ( right ) ... membrane and the relative permeability of the membrane to these ions . For real neurons , the concentration of potassium is high ...
Page 32
... membrane potential quickly reestablished once the current is turned off . The permeability characteristics of axonal membranes are dramatically influenced by the voltage difference across the membrane . The membrane contains both ...
... membrane potential quickly reestablished once the current is turned off . The permeability characteristics of axonal membranes are dramatically influenced by the voltage difference across the membrane . The membrane contains both ...
Page 33
... membrane ensure that adjacent membrane is depolarized to its threshold level . The adjacent membrane therefore undergoes a change in its permeability characteristics and a new action potential is generated . In this fashion , the action ...
... membrane ensure that adjacent membrane is depolarized to its threshold level . The adjacent membrane therefore undergoes a change in its permeability characteristics and a new action potential is generated . In this fashion , the action ...
Contents
Introduction to Brain Imaging | 1 |
Computerized Axial Tomography | 97 |
Magnetic Resonance Imaging | 145 |
Copyright | |
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Functional Brain Imaging William W. Orrison,Jeffrey Lewine,John Sanders,Michael F. Hartshorne Limited preview - 2017 |
Common terms and phrases
abnormal activity ALFMA arterial auditory Axial axon basal ganglia brain capillary cells central central sulcus cerebral blood flow chemical shift clinical coil computed computed tomography contrast agent cortex cortical decreased demonstrating detection diffusion dipole disease effects encoding epilepsy extracellular field strength FMRI focal frequency functional Gd-DTPA glucose gradient HMPAO infarction inhomogeneous injection lesions Magn Reson magnetic field magnetic resonance imaging mapping measured membrane metabolism methods motor msec neoplasms nerve nervous system neural neuromagnetic neurons normal Nucl nuclei oxygen paramagnetic patients pattern peak perfusion phase positron emission tomography posterior processing projections proton pulse Radon transform rCBF receptors relaxation scan seizures sensitivity sequences signal changes signal intensity slice SMRM Annual Meeting somatosensory spatial SPECT spectra spikes spin echo stimulation studies T2-weighted techniques temporal lobe thalamus tion tissue tumors uptake visual voxel white matter