ELEC ENG 3BB3:

Cellular Bioelectricity

Notes for Lecture #36Tuesday, April 5, 2011

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Brain Computer-Interface (BCI) systems:

BCI systems utilize measurement of brain signals for communication or control via a computer-based signal processing, feature extraction, feature translation and device command scheme.

Real-time interaction with the computer and some form of feedback are key components of a BCI system.

3

BCI (cont.):

(Daly & Wolpaw, 2008)

4

BCI (cont.):

(Konrad & Shanks, 2010)

5

Brain Computer-Interface (BCI) systems:

EEG-based systems to date have primarily utilized the following cortical signals:1. Slow Cortical Potentials (SCPs)2. Sensorimotor Rhythms (SMRs),

particularly

(8–12 Hz) and

(18–26 Hz) rhythms

3. P300 event-related potentials (ERPs)

6

BCI (cont.):

(Hinterberger et al, 2005)

7

BCI (cont.):

(Hinterberger et al, 2005)

8

BCI (cont.):

(Daly & Wolpaw,

2008)

9

BCI (cont.):

(Daly & Wolpaw,

2008)

10

BCI (cont.):

(Leuthardt et al, 2009)

11

BCI (cont.):

(Leuthardt et al, 2009)

12

BCI (cont.):

(Leuthardt et al, 2009)

13

BCI (cont.):

(Konrad & Shanks, 2010)