a Human Cognitive Neurophysiology Laboratory , Martinez Clinic , Martinez , CA , USA.
J Clin Exp Neuropsychol. 2013;35(7):745-58. doi: 10.1080/13803395.2013.824070. Epub 2013 Aug 15.
We analyzed computerized finger tapping metrics in four experiments. Experiment 1 showed tapping-rate differences associated with hand dominance, digits, sex, and fatigue that replicated those seen in a previous, large-scale community sample. Experiment 2 revealed test-retest correlations (r = .91) that exceeded those reported in previous tapping studies. Experiment 3 investigated subjects simulating symptoms of traumatic brain injury (TBI); 62% of malingering subjects produced abnormally slow tapping rates. A tapping-rate malingering index, based on rate-independent tapping patterns, provided confirmatory evidence of malingering in 48% of the subjects with abnormal tapping rates. Experiment 4 compared tapping in 24 patients with mild TBI (mTBI) and a matched control group; mTBI patients showed slowed tapping without evidence of malingering. Computerized finger tapping measures are reliable measures of motor speed, useful in detecting subjects performing with suboptimal effort, and are sensitive to motor abnormalities following mTBI.
我们在四个实验中分析了计算机化的手指敲击度量标准。实验 1 显示了与手优势、手指、性别和疲劳相关的敲击率差异，这些差异复制了先前大规模社区样本中的发现。实验 2 揭示了测试-重测相关性（r =.91），超过了先前敲击研究中的报告。实验 3 研究了模拟创伤性脑损伤（TBI）症状的受试者；62%的伪装者产生了异常缓慢的敲击率。基于与速率无关的敲击模式的敲击率伪装指数，在 48%的敲击率异常的受试者中提供了伪装的确认证据。实验 4 将 24 名轻度创伤性脑损伤（mTBI）患者和匹配的对照组进行了比较；mTBI 患者的敲击速度较慢，但没有伪装的证据。计算机化的手指敲击测量是可靠的运动速度测量指标，可用于检测表现不佳的受试者，并且对 mTBI 后的运动异常敏感。
