Questions tagged [neuroimaging]

For questions about techniques to directly or indirectly image the structure, function, or pharmacology of the brain.

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How to convert fmri brain volumes to brain graph [closed]

I am working with fMRI data of Alzheimer's Disease (AD) patients. I want to convert brain volumes to brain graph and then using different graph metrics, I want to classify the brain volumes in AD and ...
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129 views

What is the general frequency (or range of frequencies) of “sparks” in the human brain per minute and at what locations? [closed]

How many electrical sparks occur in the brain, on average, per minute and at what structures do they occur? For the "how many" figure, I would be happy to have ranges here from relaxed to excited ...
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Let's say I have an MRI scan of my brain. What exactly can I learn from it? [closed]

Asking this because I participated in an MRI study today at my local University, and the compensation will be an emailed 'picture of my brain'. Note that I intend this question to be catered towards ...
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reliability of fmri and pet [closed]

While I admit that pet/frmri scanning is possibly reliable when measuring physical aspects of the body, I would like to know how reliable it is when measuring cognitive aspects e.g. emotion. How ...
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Are “diagnostic” senses/feelings for brain study possible? [closed]

Modern science has quite an array of methods trying to localize and analyze brain activity, trying to get down to individual neurons firing: EEG, fMRI, CT, etc. This requires very expensive machines ...
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Where do our memories get stored and how are they retrieved again?

There is a common knowledge that several brain areas are involved in memory processes and each area is involved in a different aspect of memory. But where do our memories get stored and how are they ...
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2answers
943 views

How to make diagnosis of these symptoms using Pet scan, fMRI, and EEG? [closed]

The symptoms are muscle weakness, slow reaction time, visual perception issues, seizures, hearing loss, weight gain, general sense of pain and delusions. Using the above scanning techniques, a doctor ...
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2answers
108 views

Is what psychologists define as subconsciousness proven in neuroscience and can the psychological subconsciousness be visualized by neuroscientists?

We read phrases like The subconsciousness makes up 90% of our brain. The subconsciousness makes up 95% of our brain. The subconsciousness can be influenced by hypnosis. I have yet to see a study in ...
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63 views

What is the brain doing when someone tries to solve a physics or math problem that they can’t make any progress on?

Is their brain actually working or is it day dreaming and not functioning if they’re staring at a physics problem and not capable of making any progress on it? When a student who can’t come up with ...
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1answer
12 views

“runs” or “sessions” in Structural MRI - Purpose and Implications for Quality Control

I am working on a graduate research project using the ABIDE I and II autism datasets. MRIQC has been run on these data - and I now must remove participants marked as outliers on 3 specific quality ...
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What's the proposed mechanism of action of Trigeminal Nerve Stimulation (TNS) for ADHD? (And is there some neuroimaging in support of it?)

Last year the FDA approved the first medical device for ADHD, a Trigeminal Nerve Stimulator, a sort "pacemaker" that is used every night on the head of the patient. I'm trying find what's ...
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How firing of neurons stimulate reality? [duplicate]

Iam just an enthusiast.When I look for how does our brain works it boils down to firing of neurons in a pattern. I read that all of our thoughts, memory is due to firing of networks of neurons in a ...
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Functional neuronal units that occupy the same brain region

[Thanks to Bryan Krause's advice, I edited the question.] Definition: Let two functional units be two sets of neurons, A and B, such that the probability of being connected (synaptically or by ...
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1answer
202 views

How to import images used to analysis in SPM to FreeSurfer

FreeSurfer uses the recon-all command to semi-automatically generate its statistics. This tool implies a certain directory structure in which the files with the images for the samples should be ...
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Structural neuroimaging processing with FreeSurfer or SPM?

I have a limited amount of time to analyse strucutural neuroimaging from a sample of patients. My objective is to simply extract volumes from selected fronto-parietal areas. I have no previous ...

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