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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 ?