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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

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
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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