We hypothesized that the spiral axis, described below, is a useful screening tool to distinguish ET cases from dystonia cases. We analyzed the hand-drawn spirals of 135 individuals enrolled in a genetics study at Columbia University Medical Center.

When a patient presents with tremor, it can be useful to perform a few simple pen and paper tests. In this article, we explain how to maximise the value of handwriting and of drawing Archimedes spirals and straight lines as clinical assessments.

The meaning of SPIRAL AXIS is the axis of a twisted column drawn spirally in order to trace the circumvolutions without.

Handwritten spirals appear to have a single predominant axis in more ET than dystonia cases. The evaluation of this axis has moderate diagnostic validity as a screening tool to distinguish ET cases from those with dystonia.

To address our aim, we assessed the spiral axis in 237 unaffected first-degree relatives of ET cases (FD-ET), comparing them to 105 controls (Co). A movement disorder neurologist assessed four hand drawn spirals for the presence of a single identifiable tremor orientation axis.

Feb 13, 2023 · 小编前段时间读到一篇《BIOINFORMATICS》上的论文“spiralize: an R package for Visualizing Data on Spirals” [1]，介绍了一个R包{spiralize}，提供了很多作图函数，让坐标轴呈螺旋状，从而展示更多数据。 进入正题，先安装并载入R包： 首先作出螺旋状的坐标部分： 螺旋状的坐标轴就做好了。 想更细节的调整坐标轴，如x和y轴的范围，螺旋坐标的起止，坐标轴 …

Mar 15, 2021 · To address our aim, we assessed the spiral axis in 237 unaffected first-degree relatives of ET cases (FD-ET), comparing them to 105 controls (Co). A movement disorder neurologist assessed four hand drawn spirals for the presence of a single identifiable tremor orientation axis.

May 1, 2014 · Most (101/120, 84.2%) ET cases had a spiral axis score ≥1 vs. only half (8/15, 53.3%) of the dystonia cases (Fisher's p = 0.02). ROC analysis revealed that using a spiral axis score ≥2 as a cut off would exclude 60.0% of dystonia cases …

We hypothesized that the spiral axis, described below, is a useful screening tool to distinguish ET cases from dystonia cases. Methods: We analyzed the hand-drawn spirals of 135 individuals enrolled in a genetics study at

May 1, 2014 · The axis or direction of tremor in a spiral is determined by proximal versus distal joint oscillation in the upper limb, and tremor direction is easily computed from tablet recordings (Wang et al., 2005).