Brain computer Brain computer interfaceinterface

Outline

BCI story - from fiction to reality BCI concept - rebuilding instead of repairing BCI overview - actions from thoughts BCI methods - neural language translation BCI summary - try to speed up

BCI story

From fiction to reality

Movie fiction: The Matrix

In the futuristic vision of the Wachowski brothers' movie trilogy "The Matrix," humans dive into a virtual world by connecting their brains directly to a computer……

Real story 1: Monkey think, Robot Do

Learning to control a brain-machine interface for reaching and grasping by primates. Nicolelis et al., PLoS Biology 2003

Real story 2: ‘Ratbot’

Rat navigation guided by remote control

Chapin et al., Nature, 2002

BCI concept

rebuilding instead of repairing

In USA, more than 200,000 patients live with the motor sequelae (consequences) of serious injury. There are two ways to help them restore some motor function:

• Repair the damaged nerve axons

• Build neuroprosthetic device

Nicolelis, 2001

Motivation for BCI/BMI Research

J.R. Wolpaw et al. 2002

BCI (BMI) bypasses the brain’s normal pathways of peripheral nerves and muscles

BCI overview

actions from thoughts

Make phone callAppliance control

>> Control home appliances by mind

Tsinghua Group Gao et al., 1999, 2002, 2003

Graz Group Pfurtscheller et al., 1993, 2000, 2003

>> Help impaired hand to grasp by mind

EEG-MRP

Hold cup for drinking

BCI methods

neural language translation

Materials

• Owl monkey (Aotus trivirgtus)

• Robot arm

• Microelectrodes

• Many neuron acquisition processor

MNAP Plexon Inc.

Monkey with robot arm

NBLABS, Dennison,TX

BCI summary

try to speed up

1. Artificial Sensory Channel

Artificial Hearing

Since 1978, about 70,000 cochlear recipients worldwide.

www.cochlearamericas.com

Artificial Vision

ANY QUERIES ?