A Concept-based P300 Communication System
Severe motor impairments can severely restrict interaction with one's surroundings. Brain computer interfaces combined with text-based communication systems, such as the P300 Speller, have allowed individuals with motor disabilities to spell messages with their EEG signals. Although providing...
Main Author: | |
---|---|
Other Authors: | |
Language: | en_ca |
Published: |
2012
|
Subjects: | |
Online Access: | http://hdl.handle.net/1807/33534 |
id |
ndltd-LACETR-oai-collectionscanada.gc.ca-OTU.1807-33534 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-LACETR-oai-collectionscanada.gc.ca-OTU.1807-335342013-11-02T03:43:49ZA Concept-based P300 Communication SystemSmith, Colleen Denyse DesaulniersAlternative and augmentative communicationBrain-computer interfaceEEGP3000541Severe motor impairments can severely restrict interaction with one's surroundings. Brain computer interfaces combined with text-based communication systems, such as the P300 Speller, have allowed individuals with motor disabilities to spell messages with their EEG signals. Although providing full composition flexibility, they enable communication rates of only a few characters per minute. Utterance-based communication systems have been developed for individuals with disability and have greatly increased communication speeds, but have yet to be applied to BCIs. This paper proposes an utterance-based communication system using the P300-BCI in which words are organized in a network structure that facilitates rapid retrieval. In trials with able-bodied participants, the proposed system achieved greater message speeds, but rated lower in effectiveness than the P300 Speller. Nonetheless, subject preferences and reports of self-perceived effectiveness suggested an inclination towards the proposed word system and thus further investigation of word-based networks is warranted in brain-controlled AAC systems.Chau, Tom2012-112012-11-27T15:38:36ZNO_RESTRICTION2012-11-27T15:38:36Z2012-11-27Thesishttp://hdl.handle.net/1807/33534en_ca |
collection |
NDLTD |
language |
en_ca |
sources |
NDLTD |
topic |
Alternative and augmentative communication Brain-computer interface EEG P300 0541 |
spellingShingle |
Alternative and augmentative communication Brain-computer interface EEG P300 0541 Smith, Colleen Denyse Desaulniers A Concept-based P300 Communication System |
description |
Severe motor impairments can severely restrict interaction with one's surroundings. Brain computer interfaces combined with text-based communication systems, such as the P300 Speller, have allowed individuals with motor disabilities to spell messages with their EEG signals. Although providing full composition flexibility, they enable communication rates of only a few characters per minute. Utterance-based communication systems have been developed for individuals with disability and have greatly increased communication speeds, but have yet to be applied to BCIs. This paper proposes an utterance-based communication system using the P300-BCI in which words are organized in a network structure that facilitates rapid retrieval. In trials with able-bodied participants, the proposed system achieved greater message speeds, but rated lower in effectiveness than the P300 Speller. Nonetheless, subject preferences and reports of self-perceived effectiveness suggested an inclination towards the proposed word system and thus further investigation of word-based networks is warranted in brain-controlled AAC systems. |
author2 |
Chau, Tom |
author_facet |
Chau, Tom Smith, Colleen Denyse Desaulniers |
author |
Smith, Colleen Denyse Desaulniers |
author_sort |
Smith, Colleen Denyse Desaulniers |
title |
A Concept-based P300 Communication System |
title_short |
A Concept-based P300 Communication System |
title_full |
A Concept-based P300 Communication System |
title_fullStr |
A Concept-based P300 Communication System |
title_full_unstemmed |
A Concept-based P300 Communication System |
title_sort |
concept-based p300 communication system |
publishDate |
2012 |
url |
http://hdl.handle.net/1807/33534 |
work_keys_str_mv |
AT smithcolleendenysedesaulniers aconceptbasedp300communicationsystem AT smithcolleendenysedesaulniers conceptbasedp300communicationsystem |
_version_ |
1716612928266829824 |