可以使脑卒中患者与计算机进行沟通的大脑-计算机接口新浪微盘-3页精选文档

Brain-computer interface enables "locked-in" brain stroke sufferer to communicate
可以使脑卒中患者与计算机进行沟通的大脑-计算机接口
By Nick Lavars
October 9, 2014
Research conducted at the East Tennessee Sate University suggests that brain-computer interfaces could help sufferers of 'locked-in syndrome' to communicate (Image: Shutterstock)
By enabling users to communicate and control devices with their thoughts, brain-computer interfaces (BCI) hold almost a scary amount of potential. While they have achieved feats such as directing the flight of a quadcopter and helping victims of paralysis to communicate, sufferers of brainstem stroke with "locked-in" syndrome have so far been beyond reach. But now, a researcher at East Tennessee Sate University (ETSU) has demonstrated BCIs may in fact give brainstem stroke patients a voice again, with very specific brainwaves serving as a typing finger for a virtual keyboard.
“We have significant research showing that BCI is beneficial to ALS patients [amyotrophic lateral sclerosis, a neurodegenerative disorder that results in muscle wasting]," says Dr Eric Sellers,
associate professor of Psychology at ETSU and leader of the study. "But until now there were no studies that looked specifically at patients with a brainstem stroke to see if it worked for them as well."
Over 13 months, Sellers worked with a brainstem stroke patient suffering from locked-in syndrome, a condition where the person is aware of their surroundings but unable to move any muscles other than the eyes. With sensors positioned on the scalp to monitor brain activity, the study hinged on a common brain response called P300, which occurs around 300 milliseconds following the detection of a meaningful stimulus.
With a model of a computer keyboard positioned in front the user, they were advised to focus on the key that they wanted to type. The BCI then randomly flashed numbers and letters in front of their eyes in quick succession. When the item the user is focusing on flashes, a P300 occurs, with the computer then recognizing this as selection of the key and compiling the words the patient wished to communicate. The patient was able to correctly spell words and communicate with family members in 40 out of 62 sessions with the BCI.
“Locked-in syndrome is associated with conditions other than ALS, and this study suggests that BCI may be useful regardless of the precipitating event that caused the condition,” says Sellers. The research was published in the journal Science Translational Medicine.
Source: East Tennessee State University
http://gizmag/brain-computer-interface-brain-stroke-communicate /34204/
2014年10月19日星期日下载
希望以上资料对你有所帮助，附励志名言3条：
1、生命对某些人来说是美丽的，这些人的一生都为某个目标而奋斗。

2、推销产品要针对顾客的心，不要针对顾客的头。

3、不同的信念，决定不同的命运。