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The vast majority of neural processes (and their associated mental processes) in the brain are subconscious (or unconscious), i.e. we are not consciously aware of them and cannot consciously control them. Yet, without these subconscious processes, we will not be able to live as we do now – we will have to spend an incredible amount of time and effort to ...


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It looks like fslroi is the tool I'm looking for. To temporally truncate a scan the usage would be fslroi <input> <output> <tmin> <tsize> where <tmin> would be zero and <tsize> would be the number of volumes you want to keep. Now I just need to figure out how many volumes make up 7 minutes...


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Assuming your mask is in NIfTI format (nii or nii.gz extension), you can use the fslstats command line tool for that. Just type fslstats on the command line to see the help text for command syntax and arguments. For your specific case, you can use: fslstats <input> -V where <input> is the path to your mask NIfTI file. The returned numbers will ...


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The primary visual cortex is topographic, which means that specific parts of that brain region correspond exactly to specific parts of your visual field. In order to prove that a scotoma (literally a blind spot in your vision) is due to dysfunctional neurons, all you need to do is show that the neurons responsible for that spot in your vision are not working ...


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The Nighres project has released some 7T MRI datasets and tools to run them. You can read the paper on the tools here, and download the datasets from NITRC here.


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As discussed previously in this thread, information (specifically, information that exists in the neural circuits), is probably the physical quantity that correlates perfectly with consciousness and, I would like to add, qualia. This is because information can have the same complexity, dynamicity, and content as consciousness and qualia do. Now, what is the ...


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To survive, the brain has evolved to solve problems it faces at the best it can, from the problems of escaping a stalking tiger, finding food, competing for the fit mate in the ancient time to solving physics/math problems, trying to make ends meet, and planning for a secure future in the present time. But the ability for a particular brain to solve any ...


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I'm not personally familiar with this project (outside my area of research), but a quick search brought me to the Autism Brain Imaging Data Exchange (ABIDE): http://fcon_1000.projects.nitrc.org/indi/abide/ Based on citation counts for the primary articles, it seems popular. If you want to compare to other types of brains you will probably need to use ...


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The biology underlying the BOLD response is much slower than typical TRs, so I would say on one hand it doesn't really matter because the TR interval is not the time scale that matters. On the other hand, if you are presenting stimuli of duration where the TR matters, those stimuli are occurring too quickly to be resolved separately using fMRI. You may be ...


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This is not a circular question. In fact, using fMRI to create targets is useful to determine TMS targets outside of the motor cortex or visual cortex. See the study here that used fMRI during a task to generate TMS targets, and then applied theta burst stimulation to those targets: https://www.pnas.org/content/113/21/6059 BOLD contrasts are very useful ...


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