Mehdi Ordikhani-Seyedlar: What happens in your brain when you pay attention?
Mehdi Ordikhani-Seyedlar: O que acontece em seu cérebro quando você presta atenção?
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,
em muitas direções ao mesmo tempo
if you can stay focused.
se você consegue ficar concentrado.
is all about what we are focusing on,
daquilo em que estamos concentrados,
our brain is trying to filter out.
nosso cérebro está tentando filtrar.
you direct your attention.
que você direciona sua atenção.
you move your eyes towards something
seus olhos em direção a algo
you pay attention to something,
você presta atenção em algo,
your direction of the eyes,
a direção dos seus olhos,
the surrounding area,
verificando a área ao redor,
brain-machine interfaces,
entre cérebro e máquina,
the brain and the computer.
we can build models for the computers,
construir modelos para computadores,
how well our brain functions.
quão bem nosso cérebro funciona.
can be used as assistive devices
ser usados como dispositivos auxiliares
e então, terapias erradas.
não só pelos nossos olhos,
an interesting model for computers.
interessante para computadores.
what are the brainwave patterns
os padrões de ondas cerebrais
or when you look covertly.
ou quando olha implicitamente.
there are two flickering squares,
existem dois quadrados piscantes:
at a slower rate than the other one.
you are paying attention to,
você está prestando atenção,
will start resonating in the same rate
vão começar a ressoar na mesma velocidade
you are watching
para onde você está olhando
when you pay overt attention,
quando você presta atenção explícita,
in one of the squares
diretamente em um dos quadrados
we saw that these flickering squares
vimos que esses quadrados piscantes
da parte traseira da cabeça delas,
from the back of their head,
of your visual information.
processamento de informações visuais.
when you pay covert attention.
ao prestarmos atenção implícita.
to look in the middle of the screen
para olharem no meio da tela
to either of these squares.
appeared in their brain signals,
apareceram nos sinais cerebrais,
which was paid attention to,
que estava tratando essa informação
a ativação da área frontal.
the activation of the frontal area.
is responsible
é responsável
como ser humano.
it seems that it works as a filter
trabalhar como um filtro
only from the right flicker
entrarem só do quadrado piscante
coming from the ignored one.
vinda do que está sendo ignorado.
is indeed a key for attention,
é de fato uma chave para atenção
cannot inhibit these distractors,
não consegue impedir essas distrações,
for a long time on a single task.
por um longo tempo em uma única tarefa.
com seu cérebro conectado a ele,
brain-machine interfaces
cognitivas entre cérebro e máquina
and he lost complete ability to speak.
e perdeu completamente a fala.
but there was no way to respond,
mas não tinha como responder,
because he was illiterate.
padrões de ondas cerebrais
about images or even letters,
em imagens ou mesmo letras,
a different brainwave pattern
de ondas cerebrais diferente
communicate for people who can't speak?
que não podem falar?
the thoughts of a person in a coma?
os pensamentos de uma pessoa em coma?
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