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Through analysis of fMRI data we are able to distinguish the localized stimulation of different types of videos. By determining the value of the correlation between the convolution of the hemodynamic response function and the unit step function with the BOLD signal at each voxel, we can effectively determine the relative response of each voxel to these videos.


We noticed that our analysis runs into issues with the edges of the brain as shown below in [link] . The lines and large flat regions of high/low correlation are uncharacteristic of this type of data and disappears upon moving one voxel into the image. This may result from inaccuracies in the preprocessing techniques at the edges.

Note the bands of high and low correlation at the lower right extremity.

We also ran into issues with processing speed and memory while performing analysis on these datasets. In order to obtain high resolution fMRI data, the dataset was extremely large and consumed large amounts of memory. While we would have liked to process a higher quantity of information with more predictors for our linear model, constraints on time as well as physical computational limitations prevented us from doing so.

Future work

In the short term, we want to extend the range of fitting functions for the generalized linear model. Currently, we are only using the convolution of the hemodynamic response function and the unit step, but by including more modeling terms, we could improve upon the accuracy of our detection methods.

In the future, we would like to extend this work into image reconstruction techniques for fMRI. By understanding the types of stimulation from different types of images and videos, we could hope to recreate the image that anyone is viewing at any given time from their fMRI data.

Questions & Answers

I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
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How can I make nanorobot?
how did you get the value of 2000N.What calculations are needed to arrive at it
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Source:  OpenStax, Mapping brain activity in response to categories of video stimuli. OpenStax CNX. Dec 16, 2013 Download for free at http://cnx.org/content/col11597/1.1
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