Electric Shocks, Not Drugs, Help A Brain Disease

06/18/2014

00:00 / 00:00
复读宝 RABC v8.0beta 复读机按钮使用说明
播放/暂停
停止
播放时:倒退3秒/复读时:回退AB段
播放时:快进3秒/复读时:前进AB段
拖动:改变速度/点击:恢复正常速度1.0
拖动改变复读暂停时间
点击:复读最近5秒/拖动:改变复读次数
设置A点
设置B点
取消复读并清除AB点
播放一行
停止播放
后退一行
前进一行
复读一行
复读多行
变速复读一行
变速复读多行
LRC
TXT
大字
小字
滚动
全页
1
  • From VOA Learning English this is the Health Report.
  • 2
  • Modern medicine mainly uses drugs to cure disease.
  • 3
  • But what if drugs were replaced with electricity Pacemakers, small machines that doctors surgically place in the body,
  • 4
  • already use electric signals to help weak hearts beat right.
  • 5
  • And now, scientists are using electricity on the brain to ease the effects of Parkinson's disease.
  • 6
  • Parkinson's disease causes uncontrollable shaking, or tremors.
  • 7
  • Simply walking down the street is a great gift for David Dewsnap.
  • 8
  • The usual drug treatment did not help his Parkinson's disease.
  • 9
  • So, doctors cut open his skull and placed wires, or electrodes, deep in his brain.
  • 10
  • The Deep Brain Stimulation System is a two part medical device.
  • 11
  • One part is thin wires that doctors place in the part of the brain connected with movement.
  • 12
  • The other part is a battery pack. The battery produces the electric signals.
  • 13
  • Before doctors wired his brain, Mr. Dewsnap could not even take a short walk.
  • 14
  • DAVID DEWSNAP: "This procedure has been just amazing for me.
  • 15
  • Without seeing me before, you don't really understand what it was like.
  • 16
  • I couldn't use ... the left side of my body. I couldn't (could not) use it really."
  • 17
  • Caleb Kemere is an electrical engineer and brain scientist at Rice University.
  • 18
  • He has been using brain stimulation in his experiments on rats.
  • 19
  • He knows this treatment works. What he doesn't know is how.
  • 20
  • CALEB KEMERE: "We are probably making it work not as it is supposed to work,
  • 21
  • but in a new way that allows for movements to happen faithfully or for a tremor to go away."
  • 22
  • Mr. Kemere says the small electric shocks may trick the brain.
  • 23
  • The shocks copy the work of a brain chemical called dopamine.
  • 24
  • Dopamine helps control movement - or motor activity.
  • 25
  • Mr. Kemere wants to develop a brain stimulation system to treat other disorders.
  • 26
  • He explains that the system would process signals coming from the brain in real-time and then use those signals to control its own electrical output.
  • 27
  • CALEB KEMERE: "We propose to take this and then expand into something that has a much more complicated processor like the one that is found in your cell phone that can process incoming signals that we actually would be getting from the brain in real time,understand what's (what is) going on and then modulate the brain stimulation in response to that."
  • 28
  • Mr. Kemere says first researchers need to settle some small problems such as what electrical signal to use.
  • 29
  • CALEB KEMERE: "We don't what signal to use and we don't know how to do that modulation."
  • 30
  • The National Science Foundation gave Caleb Kemere money to work on such research.
  • 31
  • He believes there could be experimental devices that help people suffering from other mental disorders within five years.
  • 32
  • And that the Health Report. I'm Anna Matteo.
  • 1
  • From VOA Learning English this is the Health Report.
  • 2
  • Modern medicine mainly uses drugs to cure disease. But what if drugs were replaced with electricity Pacemakers, small machines that doctors surgically place in the body, already use electric signals to help weak hearts beat right.
  • 3
  • And now, scientists are using electricity on the brain to ease the effects of Parkinson's disease. Parkinson's disease causes uncontrollable shaking, or tremors.
  • 4
  • Simply walking down the street is a great gift for David Dewsnap.
  • 5
  • The usual drug treatment did not help his Parkinson's disease. So, doctors cut open his skull and placed wires, or electrodes, deep in his brain.
  • 6
  • The Deep Brain Stimulation System is a two part medical device. One part is thin wires that doctors place in the part of the brain connected with movement. The other part is a battery pack. The battery produces the electric signals.
  • 7
  • Before doctors wired his brain, Mr. Dewsnap could not even take a short walk.
  • 8
  • DAVID DEWSNAP: "This procedure has been just amazing for me. Without seeing me before, you don't really understand what it was like. I couldn't use ... the left side of my body. I couldn't (could not) use it really."
  • 9
  • Caleb Kemere is an electrical engineer and brain scientist at Rice University. He has been using brain stimulation in his experiments on rats.
  • 10
  • He knows this treatment works. What he doesn't know is how.
  • 11
  • CALEB KEMERE: "We are probably making it work not as it is supposed to work, but in a new way that allows for movements to happen faithfully or for a tremor to go away."
  • 12
  • Mr. Kemere says the small electric shocks may trick the brain. The shocks copy the work of a brain chemical called dopamine. Dopamine helps control movement - or motor activity.
  • 13
  • Mr. Kemere wants to develop a brain stimulation system to treat other disorders. He explains that the system would process signals coming from the brain in real-time and then use those signals to control its own electrical output.
  • 14
  • CALEB KEMERE: "We propose to take this and then expand into something that has a much more complicated processor like the one that is found in your cell phone that can process incoming signals that we actually would be getting from the brain in real time, understand what's (what is) going on and then modulate the brain stimulation in response to that."
  • 15
  • Mr. Kemere says first researchers need to settle some small problems such as what electrical signal to use.
  • 16
  • CALEB KEMERE: "We don't what signal to use and we don't know how to do that modulation."
  • 17
  • The National Science Foundation gave Caleb Kemere money to work on such research. He believes there could be experimental devices that help people suffering from other mental disorders within five years.
  • 18
  • And that the Health Report. I'm Anna Matteo.