Mehdi Ordikhani-Seyedlar: What happens in your brain when you pay attention?
Medhi Ordikhani-Seyedlar: Wat gebeurt er in je hersenen als je oplet?
Mehdi Ordikhani-Seyedlar is a computational neuroscientist, researching brain signals and their usage in brain-machine interfaces. Full bio
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in so many different directions at a time,
in meerdere richtingen wordt getrokken
if you can stay focused.
als je echt gefocust kan blijven.
is all about what we are focusing on,
dat het er bij aandacht om draait
our brain is trying to filter out.
ons brein probeert uit te filteren.
waarop je je aandacht kunt richten.
you direct your attention.
you move your eyes towards something
richt je je ogen ergens op
you pay attention to something,
schenk je ergens aandacht aan
your direction of the eyes,
de richting van de ogen, is naar voren,
scant constant de omgeving
the surrounding area,
neurowetenschapper
brain-machine interfaces,
hersenmachine-interfaces,
the brain and the computer.
van het brein en de computer.
we can build models for the computers,
modellen kunnen maken voor computers
how well our brain functions.
hoe goed onze hersenen functioneren.
can be used as assistive devices
als hulpmiddel dienen voor therapie.
kunnen verplaatsen met onze ogen
een interessant model voor computers.
an interesting model for computers.
hoe de hersengolfpatronen eruitzien
what are the brainwave patterns
en wanneer je covert kijkt.
or when you look covertly.
there are two flickering squares,
twee knipperende vierkanten,
at a slower rate than the other one.
knippert dan het andere.
you are paying attention to,
je je aandacht richt,
will start resonating in the same rate
op dezelfde snelheid te resoneren
you are watching
when you pay overt attention,
in je hersenen bij overte aandacht,
in one of the squares
naar één van de twee vierkanten te kijken
we saw that these flickering squares
dat deze knipperende vierkanten
afkomstig uit de achterkant van het hoofd,
from the back of their head,
of your visual information.
voor de verwerking van visuele informatie.
when you pay covert attention.
als je coverte aandacht aan iets geeft.
to look in the middle of the screen
van het scherm te kijken
te focussen zonder de ogen te bewegen.
to either of these squares.
appeared in their brain signals,
verschijnen in de hersensignalen,
had er maar één vierkant,
which was paid attention to,
sterkere signalen.
the activation of the frontal area.
de activering van het frontale gebied.
is responsible
voor de hogere cognitieve functies.
it seems that it works as a filter
dienst te doen als een soort filter
only from the right flicker
van de juiste knipper toe te laten,
coming from the ignored one.
van het andere vierkant te blokkeren.
is indeed a key for attention,
is inderdaad de sleutel tot aandacht
zoals mensen die ADHD hebben.
cannot inhibit these distractors,
kan afleiders niet onderdrukken
for a long time on a single task.
op een taak gefocust kunnen zijn.
zou kunnen spelen,
verbonden zijn aan een computer
brain-machine interfaces
breinmachine-interfaces
cognitieve gebieden gebruiken.
and he lost complete ability to speak.
en kon sindsdien niet meer praten.
but there was no way to respond,
maar er was geen manier om te reageren,
because he was illiterate.
want hij was analfabetisch.
actief te zijn geweest,
kunnen ontdekken
about images or even letters,
aan plaatjes of letters denken?
a different brainwave pattern
dan de letter B, enzovoorts.
communicate for people who can't speak?
communiceren voor mensen
the thoughts of a person in a coma?
van iemand in coma te begrijpen?
ABOUT THE SPEAKER
Mehdi Ordikhani-Seyedlar - NeuroscientistMehdi Ordikhani-Seyedlar is a computational neuroscientist, researching brain signals and their usage in brain-machine interfaces.
Why you should listen
Mehdi Ordikhani-Seyedlar is a research scientist interested in brain-wave patterns generated by neural activities in the brain. Since embarking on his research on neuroscience, Ordikhani-Seyedlar has been working on different brain functions such as learning, memory, pain and, more recently, visual attention in humans. He also conducted a part of his research on monkeys when he was in Dr. Miguel Nicolelis' lab at Duke University. His findings help implement more accurate brain-machine interfaces to treat people who are suffering from attention deficiency.
After receiving his Ph.D in Biomedical Engineering, Ordikhani-Seyedlar was offered a postdoctoral position by Duke University to develop algorithms to process large-scale neuronal activity and brain-machine interfaces. However, due to political complications in the United States, Ordikhani-Seyedlar -- an Iranian citizen -- changed his plan to continue his brain research outside the US for some time.
As a passionate neuroscientist and neuroengineer, Ordikhani-Seyedlar's aim is to improve brain pattern detectability in computers. This enhances the ability of brain-machine interfaces substantially to better target the defected brain function which in turn enhances the sustainability of treatment effect.
Mehdi Ordikhani-Seyedlar | Speaker | TED.com