Have a Q something like MRI of the Brain?
I have Bells Palsy. After a year of having residual affects, I finally seeked the advice of a neurologist. The first point he suggested was to get a MRI of the brain with contrast. Well a couple days subsequent I got a call from the nuerologist office maxim that the MRI people suggested that I get another MRI specializing in the Internal Auditory nouns. The people on the phone wouldn't say what it could be, so I'm sort of worried. Should I be?? What could be in that nouns? Thanks!
Answers:
The radiologist who looked at the MRI of the brain probably suggested that examination of the entire path of the facial nerve be examined. Bell's palsy is cause in some cases because of some abnomality along the route of the facial nerve as it runs from the brain stem, through the temporal bone. Specialized views are needed to evaluate these regions next to MRI. An MRI request for "MRI with contrast" will return a routine generic MRI without these specialized views which lamentably must be done at a later date unless the initial request directs the radiologist to the necessity of Facial nerve.evaluation.
Most episodes of Bell's Palsy do not have any anatomoc grounds so do not be unduly concerned.
The primary auditory cortex is the region of the brain that is responsible for processing of auditory (sound) information.
As with other primary sensory cortical areas, auditory sensations reach perception simply if received and processed by a cortical area. Evidence for this comes from lesion studies in human patients who have sustained desecrate to cortical areas through tumors or strokes, or from animal experiments in which cortical areas were deactivated by cooling or locally applied drug treatment. Damage to the Primary Auditory Cortex in humans lead to a loss of any 'awareness' of sound, but an ability to react reflexively to sounds remains as in attendance is a great deal of subcortical processing in the auditory brainstem and midbrain.
Neurons in the auditory cortex are organised according to the frequency of nouns to which they respond best. Neurons at one end of the auditory cortex respond best to low frequencies; neurons at the other respond best to high frequencies. There are multiple auditory areas (much like the multiple areas surrounded by the visual cortex), which can be distinguished anatomically and on the basis that they contain a complete "frequency map." The purpose of this frequency map (known as a tonotopic map) is unknown and is likely to emulate the fact that the sensory epithelium of the auditory system, the cochlea, is arranged according to sound frequency. The auditory cortex is involved in tasks such as identify and segregating auditory "objects" and identifying the location of a sound contained by space.
Human brain scans have indicated that a peripheral bit of this brain region is alive when trying to identify musical pitch. Individual cells consistently get excited by sounds at specific frequencies, or multiples of that frequency.
The primary auditory cortex is about impossible to tell apart as Broadman areas 41 and 42. It lies in the posterior half of the superior temporal gyrus and also dives into the lateral sulcus as the transverse temporal gyri (also called Heschl's gyri).
The primary auditory cortex is located surrounded by the temporal lobe. There are additional areas of the human cerebral cortex that are involved in processing nouns, in the frontal and parietal lobes. Animal studies indicate that auditory fields of the cerebral cortex receive ascending input from the auditory thalamus, and that they are interconnected on impossible to tell apart and on the opposite cerebral hemispheres.The auditory cortex is composed of fields, which differ from respectively other in both structure and function.[1]
The number of fields varies within different species, from as few as 2 in rodents to as many as 15 in the rhesus monkey. The number, location, and consortium of fields in the human auditory cortex are not known at this time. What is set about the human auditory cortex comes from a base of knowledge gain from studies in mammals, including primates, used to interpret electrophysiologic tests and functional imaging studies of the brain in humans.
When respectively instrument of the symphony orchestra or the jazz band plays the same note, the aspect of each sound is different — but the musician perceives each document as having the same pitch. The neurons of the auditory cortex of the brain are able to respond to pitch. Studies within the marmoset monkey have shown that pitch-selective neurons are located in a cortical region near the anterolateral border of the primary auditory cortex. This location of a pitch-selective nouns has also been identified in recent functional imaging studies within humans.[2][3]
The auditory cortex does not just receive input from lower centers and the ear, but also provides it. Source(s): wikipedia
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Answers:
The radiologist who looked at the MRI of the brain probably suggested that examination of the entire path of the facial nerve be examined. Bell's palsy is cause in some cases because of some abnomality along the route of the facial nerve as it runs from the brain stem, through the temporal bone. Specialized views are needed to evaluate these regions next to MRI. An MRI request for "MRI with contrast" will return a routine generic MRI without these specialized views which lamentably must be done at a later date unless the initial request directs the radiologist to the necessity of Facial nerve.evaluation.
Most episodes of Bell's Palsy do not have any anatomoc grounds so do not be unduly concerned.
The primary auditory cortex is the region of the brain that is responsible for processing of auditory (sound) information.
As with other primary sensory cortical areas, auditory sensations reach perception simply if received and processed by a cortical area. Evidence for this comes from lesion studies in human patients who have sustained desecrate to cortical areas through tumors or strokes, or from animal experiments in which cortical areas were deactivated by cooling or locally applied drug treatment. Damage to the Primary Auditory Cortex in humans lead to a loss of any 'awareness' of sound, but an ability to react reflexively to sounds remains as in attendance is a great deal of subcortical processing in the auditory brainstem and midbrain.
Neurons in the auditory cortex are organised according to the frequency of nouns to which they respond best. Neurons at one end of the auditory cortex respond best to low frequencies; neurons at the other respond best to high frequencies. There are multiple auditory areas (much like the multiple areas surrounded by the visual cortex), which can be distinguished anatomically and on the basis that they contain a complete "frequency map." The purpose of this frequency map (known as a tonotopic map) is unknown and is likely to emulate the fact that the sensory epithelium of the auditory system, the cochlea, is arranged according to sound frequency. The auditory cortex is involved in tasks such as identify and segregating auditory "objects" and identifying the location of a sound contained by space.
Human brain scans have indicated that a peripheral bit of this brain region is alive when trying to identify musical pitch. Individual cells consistently get excited by sounds at specific frequencies, or multiples of that frequency.
The primary auditory cortex is about impossible to tell apart as Broadman areas 41 and 42. It lies in the posterior half of the superior temporal gyrus and also dives into the lateral sulcus as the transverse temporal gyri (also called Heschl's gyri).
The primary auditory cortex is located surrounded by the temporal lobe. There are additional areas of the human cerebral cortex that are involved in processing nouns, in the frontal and parietal lobes. Animal studies indicate that auditory fields of the cerebral cortex receive ascending input from the auditory thalamus, and that they are interconnected on impossible to tell apart and on the opposite cerebral hemispheres.The auditory cortex is composed of fields, which differ from respectively other in both structure and function.[1]
The number of fields varies within different species, from as few as 2 in rodents to as many as 15 in the rhesus monkey. The number, location, and consortium of fields in the human auditory cortex are not known at this time. What is set about the human auditory cortex comes from a base of knowledge gain from studies in mammals, including primates, used to interpret electrophysiologic tests and functional imaging studies of the brain in humans.
When respectively instrument of the symphony orchestra or the jazz band plays the same note, the aspect of each sound is different — but the musician perceives each document as having the same pitch. The neurons of the auditory cortex of the brain are able to respond to pitch. Studies within the marmoset monkey have shown that pitch-selective neurons are located in a cortical region near the anterolateral border of the primary auditory cortex. This location of a pitch-selective nouns has also been identified in recent functional imaging studies within humans.[2][3]
The auditory cortex does not just receive input from lower centers and the ear, but also provides it. Source(s): wikipedia
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