In Second Nature, Nobel Prize-winning neuroscientist Gerald Edelman argues that the brain and mind are unified, but he has little patience with the claim that the brain is a computer. Fortunately for the general reader, his explanations of brain function are accessible, reinforced by concrete examples and metaphors.
Edelman suggests that thanks to the recent development of instruments capable of measuring brain structure within millimeters and brain activity within milliseconds, perceptions, thoughts, memories, willed acts, and other mind matters traditionally considered private and impenetrable to scientific scrutiny now can be correlated with brain activity.
The author describes three unifying insights that correlate mind matters with brain activity. First, even distant neurons will establish meaningful connections (circuits) if their patterns are synchronized. Second, experience can either strengthen or weaken synapses (neuronal connections). Finally, there is
A. the brain co-functions with the mind
B. the brain works like a computer
C. the brain has an accessible function
D. the brain sends signals to the mind
46. The onrush of cheap communications, powerful computers and the Internet all explain why many people feel that, nowadays, change is happening ever more rapidly as technological progress accelerates. Moore’s law, that the power of microchips doubles every 18 months, has been tested and found correct. This is what gives people the sense of a world shifting beneath their feet.
47. Yet the implication that rapid change is a new phenomenon is again misleading. If you measure the time it takes for a technology to become widely diffused, today’s experience does not seem unusual. Take the car. The basic patent for an internal combustion engine capable of powering a car was filed in 1877. By the late 1920s-50 years later-over half of all American households owned a car.
48. The comparable dates for the computer are harder to tie down, but the first big computer, based on vacuum valves, was built in1946. The transistor-the first semicondu
八岁女孩,目前发生左手和左前臂抽搐,最后扩大到整个左上肢抽搐1分钟。连续发作2次后,左上肢肌力Ⅲ级,肱二头肌、肱三头肌腱反射减退。1天后肢体肌力和体征完全恢复正常。
本病最可能的定位诊断中病损在( )我来回答: