For questions about methodology and tools related to functional magnetic resonance imaging. For general questions about brain-structure use neurobiology, and for general imaging questions use neuroimaging.

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How many dimensions do “thoughts” have [closed]

Some people are able to recollect distant memories, sounds, smells or even feeling. But our technology could only transform this abstract cognitive process into one dimension signal such as the EEG or ...
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1answer
65 views

Does listening to music precludes fMRI thought recognition?

Imagine an experience which the target is to read the thought in words from fMRI heatmaps. Does listening to music prevents the recognition of words derived from thought? In other words I'm asking if ...
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1answer
16 views

Why superimposing PET data on MRI scan images instead of doing fMRI scans?

I'm currently reading this paper: Savic & Lindström (2008). PET and MRI show differences in cerebral asymmetry and functional connectivity between homo- and heterosexual subjects. It certainly ...
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Are there any studies (fMRI scans, etc) showing why some people (supposedly) are more open to hypnotism?

In this article published in Harper's magazine back in 1996, journalist David Foster Wallace described his experience with hypnotist Nigel Ellery (see the last section of the article, titled "THE ...
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1answer
38 views

Can fMRI and EEG signals be generated from NEF models?

The basic function of the NEF is to map the outside world onto neurons, using the firing rates of the neurons. It also supports various neuron models. Have these firing rates been used to create EEG ...
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Neurophysiological indications of focus and motivation

Is there any way to detect a subject being focused or highly motivated (assuming that these two states are essentially the same) using any sort of external detection, such as fMRI or EEG? How would ...
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1answer
89 views

How does glial cell activity influence fMRI, EEG signals?

Glial cells comprise about 80% of the cells in the human brain. But physiological models of EEG and fMRI often relate only to neuronal activity. How do glial cells affect large-scale imaging ...
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1answer
35 views

Is there a good entry-level tutorial for SPM?

The title pretty much says it all. I need to do some fMRI data analysis and I can't find any entry-level tutorials for Statistical Parameter Mapping (SPM). I've looked at some of the videos on the ...
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73 views

What does fMRI measure exactly

It is true that blood flows to wherever the brain is most activated and does fMRI measure the blood flow inside of the brain through oxygen content?
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47 views

Finding consciousness through EEG

I've read an article about the consciousness in vegetative patients. Adrian Owen is one of the neuroscientist making research on this field. The article published on "Le scienze" was about the usage ...
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1answer
35 views

Are there any fMRI decoding papers examining the relationship between attentional cueing and activity in V1?

I'm interested in reading on the influence of exogenous attention on cortical representations in early visual areas, but so far my google-fu seems to be failing me. There seems to be some literature ...
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34 views

Why *fractional* anisotropy?

Does anyone know why the FA (fractional anisotropy) measure in diffusion tensor imaging is called "fractional"? I'd have thought "local", i.e. voxel-wise, would have been the correct way to qualify ...
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89 views

Is there a correlation between brain size and amount of sleep?

As far as we know, sleep seems to be the part of the daily cycle when executive functions are resting and memories are fortifying. Many, but not all, of the functions that become dysfunctional upon ...
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122 views

MRI images upside-down in FSLVIEW

I'm visualizing structural data in FSLVIEW, but the sagittal and coronal planes are both upside-down / not in the conventional orientation, i.e. rotated by 90º and 180º. I understand that this ...
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2answers
250 views

Open fMRI data (or, collaborators)?

Are there any open fMRI datasets available on the internet? Experimental design doesn't matter much, since I would be working towards a new data analysis method. If the distributed data has been ...
3
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1answer
148 views

What are new and exciting research areas or applications in systems neuroscience? [closed]

Like the title says, what are new and exciting research areas or applications in systems neuroscience? I know the question is a broad one, so let me narrow it down a bit: I will get my master's ...
5
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1answer
72 views

Is there any fMRI evidence for different “states of mind”?

If you've seen a snickers commercial, it goes something like "you are a different person when you are hungry". I'm interested if the person's brain actually looks different when observed through fMRI ...
5
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1answer
44 views

Is it reasonable to have a factor with only two levels in a carry-over design for an fMRI study?

I'm planning a carry-over design for an fMRI study. To save time, since it seems that I'll need a huge number of trials for my purpose, I'm wondering if it's reasonable to have a matrix 2x3x3, ...
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2answers
589 views

Plotting publication-quality ball-and-stick models of brain connectivity in 3D

I'm working on brain imaging (fMRI) and I'm looking for a way to plot brain effective connectivity (dynamic causal modeling) parameters between different brain regions in a 3D plot. The plotting ...
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313 views

What are different ways to determine centroids of fMRI activation, their drawbacks and perks?

I'm reading an older article on bilingualism (Kim, Relkin, Lee, & Hirsch, 1997) for a seminar. They were interested in the spatial separation of two languages in early and late bilinguals. They ...