Brain Computer Interfaces and NeuroGaming

Continuing with the discussion earlier, lets proceed with Brain Computer Interfaces.

 

A Brain Computer Interface(BCI) is a direct communication pathway between the brain and an external device.

How BCIs work:

Motor BCIs:

  • Measure the electrical potential of the brain
  • Decode the signal
  • Use the decoded signal to control an external device

Sensory BCIs:

 

  • Measure a physical signal
  • Encode the signal into an electrical pattern
  • Electrically stimulate the brain

BCIs are very much applicable for sensory substitution.

Sensory substitution means transforming the characteristics of one sensory modality into stimuli of another sensory modality. Sensory substitution systems can help handicapped people by restoring their ability to perceive a certain defective sensory modality by using sensory information from a functioning sensory modality.For example, to use the tongue in place of the eye as we are going to see in the following vision substitution system:

BrainPort is an example of an electro-tactile vision substitution system.

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Technical Components:

  • A digital video camera
  • A tongue simulator array
  • A base unit

Electro-tactile signals:

  • Signals that convey non-tactile(tactile referring to the sense of touch), in our case visual, information to a person by applying painless electric currents to the tongue at precise locations according to an encoded pattern.

How it works:

  • Visual information is collected from the head mounted camera and fed to the base unit.
  • The base unit translates the visual information into a simulation pattern.
  • A strong signal is applied for every corresponding white pixel, a medium-strength signal for every corresponding gray pixel and no signal for corresponding black pixels.
  • In short, patterns of light are tracked by the camera and transformed into electric signals which represent those patterns of light. These signals reach a person’s tongue and in this way, the person’s tongue is receiving image data.

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Electrocorticography:

  • Considered very accurate as electrodes are placed directly on the brain’s surface by surgery.brain-computing-working

 

Electroencephalography:

  • Considered the safest and easiest because there is no surgery involved as the signals are read directly from the brain’s scalp.EEG SKULL CAP = Honda connects brain thoughts

Here we’re dealing with the brain’s electrical signals.

Signals are nothing but any quantity measurable through time or over space(or both).  We observe the signal in both the time domain and the frequency domain and note the features of the signal we are interested in.

BCIs have already made their way into brightening the lives of people with disabilities and now they are also making their way into Gaming!!!

Emotiv Systems is an Australian electronics company developing brain–computer interfaces based on electroencephalography (EEG) technology. The company was founded in 2003 by four scientists and executives: neuroscientist Professor Allan Snyder, chip-designer Neil Weste, and technology entrepreneurs Tan Le and Nam Do.

You can visit their official website at emotiv.com

The NeuroGaming 2014 Conference and Expo was held on May 7-8, 2014 at City View – Metreon, San Francisco. Here is one of the many videos which is about how new sensory gaming technologies like neurosensing, gesture and voice control, haptics and other new sensors are transforming game play. This expert panel shares their creative insights into where these technologies are headed and how they will converge to create new gaming experiences.

You can head to www.neurogamingconf.com for more such interesting information.

In my next and final part of the discussion on Neural Engineering, I’ll talk about Brain Hacking 🙂 ! So stay tuned 🙂 !

In love with computers since 1995 :) . I grew up in different parts of India with a special liking for Rajasthan. Music and technology are two things which I am very fond of. and I love to always be ahead and steady in life with an eagerness to keep learning. Singing,hardcore gaming, pencil sketching, technology research,blogging and listening to music albums of various genres are some of my favorite hobbies.I am a passionate biker as well and currently am pursuing M.Tech in Computer Science after working as a Linux/Windows System Administrator for 2 years.

1 COMMENT

  1. I am looking for a world class company in India which can work on neurogaming for one of my automobile client for Auto expo 2016. Also apart from neurogaming if there is anything which has never been showcased in India or for that matter in the world ever would be great and we are happy to explore that.

    Please help.

    You can reach me on 9953115590.

    Thanks in anticipation.

    Regards,
    Aseem chaturvedi

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