Unhealthy habit

时间:2019-03-07 09:13:09166网络整理admin

Chewing tobacco impairs people’s ability to carry out complex manual tasks with precision, according to Jose Contreras-Vidal of the University of Maryland in College Park. People who smoke tobacco may also suffer from a similar impairment. Contreras-Vidal and his colleagues asked 10 tobacco chewers and 10 controls to perform complex visuomotor tasks. In each case, they had to move a cursor as quckly as possible towards a target on a computer screen. The tobacco chewers had more trouble doing so, and their movements were more jerky and slow (Nicotine & Tobacco Research, vol.1, p 219). But after a day of abstinence they performed normally. Nicotine probably boosts levels of dopamine – a neurotransmitter involved in movement _ beyond the optimum, says Contreras-Vidal. “I would expect the same for cigarettes,