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Study of the anatomy and organization of the nervous system.
222 questions
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Which brain structures are most involved in the construction of the motion image in motor imagery?
I have several possible answers. They are motor cortex, somatosensory (sensorimotor) cortex, cerebellum, insular cortex, premotor cortex, cingulate gyrus, occipital cortex and temporal cortex.
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57
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What makes dopaminergic neurons fire when maintaining base dopamine levels?
Are they signaled by other action potentials? Other neurotransmitters? Do they just fire on their own? If not triggered by an external stimulus, why does depolarization make them fire more frequently?
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2
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76
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how can a ganglion be defined as cluster of neuron bodies when it has interneurons?
Let alone the presynaptic button existing there as well, how is a whole interneuron existing there not contradict the definition ?
1
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1
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145
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What is a polar plot of relative neural firing
I am taking my PhD qualifying exams on monday, and there is a seemingly simple practice problem that I can't seem to figure out, and I was hoping someone here would have some knowledge, or at least be ...
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1
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93
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Does communication with new parts of body requires internal changes in brain?
I am not a biological scientist and have low biology knowledges in general, but I want to know some thing.
Most of us probably can't even imagine what it feels the sixth finger to be touched. Because ...
- 113
0
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1
answer
51
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Can Neurons be connected in Series and will that pattern create huge voltage in human body?
We have learned in Physics that when multiple voltage sources are connected in Series , the resultant voltage becomes the summation of all voltages .
Now, my question is - Can Neurons be connected in ...
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0
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50
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How can nerves slide without tearing
While reading about an exercise called nerve glides I learned that nerves are quite inelastic. With all the nerve branches and relatively straight path how do nerves slide back and forth without ...
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1
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1
answer
75
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What does bregma -4.36mm mean?
I am reading a journal paper. In this paper, they inject adeno-associated viruses into the brains of rats. In the below figure, there is something that I want to clarify:
In Figure A, I am not sure ...
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1
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286
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Why is the anterior pituitary not considered part of the diencephalon?
According to the wikipedia page on the diencephalon, the posterior pituitary gland is considered part of the diencephalon, but the anterior is not. Is there a reason that these two lobes of the same ...
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1
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251
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Why does Sanjay Gupta's brain look so unusual? (brain model shown on CNN) The subdivisions don't look like the lobes I learned in school
above: Screenshot from CNN's May 18, 2023 Feinstein’s office confirms broader health complications, contradicting senator’s denial below: from anatomyinfo.com's Parts of the Brain
Neurosurgeon Dr. ...
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6
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1
answer
546
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Is there a quantitative report for cortical homunculus?
Almost all websites that I see for cortical homunculus only show the final picture with some qualitative descriptions such as "hands have more dexterity and occupy more motor cortex."
But is ...
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2
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242
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What is the evidence for cognition being mainly confined to the brain?
We believe that the processes of cognition are mainly confined to the brain.
What is the evidence for that?
I understand that the brain shows increased oxygen saturation in fMRI scans while thinking ...
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1
answer
136
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Abnormally fast nerve conduction
Is there any neurological condition or disease where nerve conduction becomes abnormally fast?
We know that myelinated neurons conduct impulses much more rapidly than non-myelinated ones as the myelin ...
1
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0
answers
319
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Biological reason for "deadlift face"?
Always when I deadlift at the maximum load, my face looks more or less like this:
or this:
The same applies for when I do other heavy-weight exercises.
But what biological mechanism causes that? ...
- 305
2
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0
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40
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How to choose which animals to study when designing evolutionary neuroscience research project
I am currently writing a reseach project for a scientific initiation and my idea would be a literature review identifying all empirical physiological and anatomical evidence for the presence and ...
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