Shubham Kumar
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on the atlas · 59
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- Session 3 Group Analysis | Data Analysis in Neuroimaging (MRI) 2023/241 savers
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highlights · 348
filtered_func_data the 4D FMRI data after all filtering has been carried out. (prefiltered_func_data is the output from motion correction and the input to filtering, and will not normally be saved in the FEAT directory.) Although filtered_func_data will normally have been temporally high-pass filtered, it is not zero mean; the mean value for each voxel's timecourse has been added back in for various practical reasons. When FILM begins the linear modelling, it starts by removing this mean.
FEAT/UserGuide - FslWikiThe CONN toolbox is one of the most widely used resting-state analysis packages available.
Functional Connectivity and the CONN Toolbox — Andy's Brain Book 1.0 documentationWhen do you add temporal derivatives and what are they for?
FEAT/FAQ - FslWikiWhat contrast should I use to get ...?
FEAT/FAQ - FslWikiRecent research has identified a link between the global mean signal of resting-state functional MRI (fMRI) and macro-scale cerebrospinal fluid movement, indicating the potential link between this resting-state dynamic and brain waste clearance.
Decoupling Between Brain Activity and Cerebrospinal Fluid Movement in Neurological Disorders - Liu - Journal of Magnetic Resonance Imaging - Wiley Online LibraryHighpass temporal filtering
FEAT/UserGuide - FslWikiFirst-level or Higher-level Analysis?
FEAT/UserGuide - FslWikiMarples, The Strange Case of Valerii Legasov, Radio Liberty, April 7, 1989
Valery Legasov - WikipediaNature Neuroscience (the gold standard journal in the field)
The Science & Psychology of LyingIt takes time to develop this skill. Children don’t lie until they develop “theory of mind,” the understanding that other entities have thoughts different from their own, and the ability to reason as to what those thoughts, feelings, or beliefs might be. (This is why people on the autism spectrum are often unusually truthful and blunt: Many have underdeveloped theory of mind.) So kids start lying (badly) at around three or four. The ability to conceive and maintain plausible lies doesn’t develop until the preteen years; teenagers and people in their twenties are most adept. After age 45, for r…
The Science & Psychology of LyingAlthough most people’s brains are similar - everyone has a cingulate gyrus and a corpus callosum, for instance - there are also differences in brain size and shape.
Chapter 6: Registration and Normalization — Andy's Brain Book 1.0 documentationSladky et al. (2011) also demonstrated that slice-timing correction can lead to significant increases in statistical power for studies with longer TRs (e.g., 2s or longer), and especially in the dorsal regions of the brain.
Chapter 4: Slice-Timing Correction — Andy's Brain Book 1.0 documentationThe two most commonly used methods for creating volumes are sequential and interleaved slice acquisition.
Chapter 4: Slice-Timing Correction — Andy's Brain Book 1.0 documentationEach of these slices takes time to acquire - from tens to hundreds of milliseconds.
Chapter 4: Slice-Timing Correction — Andy's Brain Book 1.0 documentationyou should look at your data, which we will do after each preprocessing step
Chapter 1: Brain Extraction (also known as “skullstripping”) — Andy's Brain Book 1.0 documentationOpen the FSL GUI from the sub-08 directory, click on the Folder icon next to the Input image field, and navigate to the anat directory. Select the file sub-08_T1w.nii.gz and click the OK button. Notice that the Output image field is automatically filled in with the word brain appended to your Input image, which is FSL’s default.
Chapter 1: Brain Extraction (also known as “skullstripping”) — Andy's Brain Book 1.0 documentationOthers have established that everyone’s brain has a similar processing speed, although those with a higher IQ are slightly faster (E. Roth (1964)).
Fastest Possible Processing Speed of the Human Brain – World Mental CalculationUsing this, Psychologists recently found an estimate of around 60 bits per second for the maximum processing speed of the human brain.
Fastest Possible Processing Speed of the Human Brain – World Mental CalculationThe time taken to perform a single operation is proportional to the logarithm of the number of choices available.
Fastest Possible Processing Speed of the Human Brain – World Mental CalculationOn the other hand, Nobel laureate and professor at the Massachusetts Institute of Technology, Abhijit Banerjee, said Das' appointment posed a lot of "frightening" questions on governance of autonomous public institutions.[33]
Shaktikanta Das - WikipediaReality is that which, when you stop believing in it, doesn't go away
Philip K. Dick - WikiquoteMy major preoccupation is the question, 'What is reality?'
Philip K. Dick - WikiquoteThe genetics of eye color are so complex that almost any parent-child combination of eye colors can occur.
Eye colorAs of 2010, as many as 16 genes have been associated with eye color inheritance. Some of the eye-color genes include OCA2 and HERC2.
Eye colorIf Perelman has solved Thurston's problem then experts say it would be possible to produce a catalogue of all possible three-dimensional shapes in the Universe, meaning that we could ultimately describe the actual shape of the cosmos itself.
BBC NEWS | Science/Nature | Great maths puzzle 'solved'The voltage applied between the two electrodes of the tubes, generated by an induction coil, was anywhere between a few kilovolts and 100 kV.
Cathode rayFurther, this approach was expressed by social psychologist Kurt Lewin by the equation B = f(P, E) where behavior (B) is a function (f) of the person (P) and the environment (E).
ZeitgeistSignal mixtures tend to have Gaussian probability density functions, and source signals tend to have non-Gaussian probability density functions.
Independent component analysishe described the masses as irrational and subject to herd instinct—and he outlined how skilled practitioners could use crowd psychology and psychoanalysis to control them in desired ways
Edward Bernaysthe father of public relations
Edward Bernaysare we climbing the right hill? Why are we climbing this particular hill at all?
Why books don't workIf they take some notes, they’re not simply transcribing the author’s words: they’re summarizing, synthesizing, analyzing.
Why books don't workn summary: lectures don’t work because the medium lacks a functioning cognitive model. It’s (implicitly) built on a faulty idea about how people learn—transmissionism—which we can caricaturize as “lecturer says words describing an idea; students hear words; then they understand.”
Why books don't workto understand something, you must actively engage with it.
Why books don't workProstitution is considered one of the oldest professions in the world
PROSTITUTION IN INDIA AND ITS LEGALITY - Prime LegalThe MIT-led team’s algorithm modeled any nonlinear problem as a Bose-Einstein condensate, an exotic state of matter where interconnected particles all behave identically.
New Quantum Algorithms Finally Crack Nonlinear Equations | Quanta MagazineGive me your favorite nonlinear differential equation, then I’ll build you a Bose-Einstein condensate that will simulate it,
New Quantum Algorithms Finally Crack Nonlinear Equations | Quanta MagazineThe MIT algorithm mimics this nonlinear phenomenon on a quantum computer, using Bose-Einstein math to connect nonlinearity and linearity.
New Quantum Algorithms Finally Crack Nonlinear Equations | Quanta MagazineThe MIT-led paper took a different approach. It modeled any nonlinear problem as a Bose-Einstein condensate. This is a state of matter where interactions within an ultracold group of particles cause each individual particle to behave identically. Since the particles are all interconnected, each particle’s behavior influences the rest, feeding back to that particle in a loop characteristic of nonlinearity.
New Quantum Algorithms Finally Crack Nonlinear Equations | Quanta MagazineChilds’ team used Carleman linearization, an out-of-fashion mathematical technique from the 1930s, to transform nonlinear problems into an array of linear equations.
New Quantum Algorithms Finally Crack Nonlinear Equations | Quanta MagazineThe problem is, the physics underlying quantum computers is itself fundamentally linear.
New Quantum Algorithms Finally Crack Nonlinear Equations | Quanta MagazineHensel is well known for his introduction of p-adic numbers.
Kurt Hensel1225 – 7 March 1274)
Thomas AquinasHe has been described as "the most influential thinker of the medieval period"
Thomas AquinasThomas said slavery was not the natural state of man.[122] He also held that a slave is by nature equal to his master
Thomas AquinasEpistemology (theory of knowledge)
Thomas AquinasChaos: When the present determines the future, but the approximate present does not approximately determine the future.
Chaos theoryThe belief that palliative care hastens death is counter to the experience of physicians with the most experience in this area.”
Doctrine of Double Effect (Stanford Encyclopedia of Philosophy)There is a broad consensus that when used appropriately, respiratory depression from opioid analgesics is a rarely occurring side effect.
Doctrine of Double Effect (Stanford Encyclopedia of Philosophy)Physicians and researchers have insisted repeatedly that it is a myth that opioids administered for pain relief can be expected to hasten death (Sykes and Thorns, 2003 provide a review of a large number of studies supporting this claim).
Doctrine of Double Effect (Stanford Encyclopedia of Philosophy)