Transcript Integrazione EEG-MRI

Brain-Computer Interface
@DICII
Luigi Bianchi
Università di Roma “Tor Vergata”
Definition and Essential Features of a
Brain–Computer Interface
“A Brain Computer Interface (BCI) is a communication system
that does not depend on the brain normal output pathways of
peripheral nerves and muscles.”
Definition and Essential Features of a
Brain–Computer Interface
“A Brain Computer Interface (BCI) is a communication system
that does not depend on the brain normal output pathways of
peripheral nerves and muscles.”
“Current BCIs use electroencephalographic (EEG) activity
recorded at the scalp or single-unit activity recorded from within
cortex to control cursor movement, select letters or icons, or
operate a neuroprosthesis.”
Definition and Essential Features of a
Brain–Computer Interface
“A Brain Computer Interface (BCI) is a communication system
that does not depend on the brain normal output pathways of
peripheral nerves and muscles.”
“Current BCIs use electroencephalographic (EEG) activity
recorded at the scalp or single-unit activity recorded from within
cortex to control cursor movement, select letters or icons, or
operate a neuroprosthesis.”
“The central element in each BCI is a translation algorithm that
converts electrophysiological input from the user into output
that controls external devices.”
(Wolpaw et al. 2000)
Signal Acquisition
 Scalp (EEG)
 Cortical surface
 Intracortical
 fMRI
 NIRS
 Scalp (MEG)
Functional Model
Translation of LSs into Semantic Symbols (SSs) by
means of encoding strategies
Classifier
Extraction of the
features of interest and
translation into
Logical Symbols
(LSs)
Acquisition Stage
EEG, ECoG, fMRI
Mapping of SSs into commands
towards output devices
S.G. Mason, M.M. Moore Jackson, G.E. Birch, (2005) “A general framework for Characterizing Studies of Brain
Interface Technology,” Ann. Biomed. Eng.
BCI RESEARCH AT “TOR
VERGATA” UNIVERSITY, ROME
From model to methods: on the Evaluation and the
Optimization of Brain-Computer Interface Systems
 PART II
– Our model
– New metric
– BF++ Toys (BCI software tools)
– NPX Lab
– Analises
– Protocols
BCI: not just for patients
– Explore Brain Function
– Brain Monitoring
– Learning process
– Awakeness
– ….
– Entertrainment
– Gaming
– Neuromarketing
– Neuropolitics
–…
Not just for patients
Astronauts could benefit from BCI for:
– Communication
– Devices Control
– Monitoring
DCMC ASI Project: “Disturbi del Controllo
Motorio e Cardio Respiratorio”
Centro di Bio-Medicina Spaziale
feedback
Transducer
Classifier
Amp
Device
User
How to improve BCIs?
Feature
Extractor
Feature
Translator
LS
SS
Control
Interface
Device
Controller
Conclusions
•BCI is a multisciplinary research field
(neuroscience, engineering, psychology,
computer science, rehabilitation, etc…)
•Many research areas are still unexplored (e.g.
Multimodal recording, stimulation, feedback)
•Not just an Assistive Device for locked-in
patients (e.g. astronauts, gamers, etc..)
•It can be used to investigate Brain Function
•There are many ways to improve BCIs
Acknowledgments
Lucia Rita Quitadamo
Girolamo Garreffa
Manuel Abbafati
Stefano Seri