| Project/Area Number |
12832027
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Institution | TOTTORI UNIVERSITY |
|---|
Principal Investigator |
KAWAMURA Takao Tottori University, Faculty of Engineering, Research Associate, 工学部, 助手 (10263485)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KANOU Naoyuki Yonago National College of Technology, Electronic Control Engineering, Associate Professor, 電子制御工学科, 助教授 (90177551)
|
|---|
| Project Period (FY) |
2000 – 2001
|
| Project Status |
Completed (Fiscal Year 2001)
|
| Budget Amount *help |
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2001: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2000: ¥3,100,000 (Direct Cost: ¥3,100,000)
|
|---|
| Keywords | ERP / P300 / Communication Aid / Auditory Stimulus / ALS |
|---|
| Research Abstract |
As a basis to develop a human interface for communication aids for the handicapped, we conducted a study on the behavior of P300 components for selecting one of the words presented through a speaker in a random sequence. For the auditory stimulus of the word-selecting experiments, 5 words were used. The target word was randomly applied with a probability of 20 %. The subject was instructed to keep a mental count of the number of target words. The P300 components were obtained from the target responses by means of the following methods : 1) Band-pass filtering of the central frequency of 3 Hz, 2) Averaging the single-trial responses to each stimulus 30 times, 3) Subtracting the common components in ERP responses for both target stimuli and non-target stimuli, and 4) Cutting out the P300 using the time-window of the trapezoidal form. Results show that the P300 component can be used to detect the attention of the subject without any physical action. However, right words were selected in a percentage of about 60 %. More experiments will be needed for future work to improve the percentage.
|
