Pusher behavior (PB) is a severe lateral postural disorder that involves a disturbed subjective postural vertical (SPV) in the frontal plane. SPV is measured by determining the mean value and standard deviation of several trials beginning on both the contralesional- and ipsilesional-tilted positions. However, the postural representation, when passively tilted to the contralesional versus ipsilesional position, is different between patients with and without PB. Therefore, we hypothesized that SPV dependence on the starting position will be influenced by PB. For 53 patients with hemispheric stroke enrolled, SPV was measured using a non-motorized vertical board with eyes closed. The mean value (tilt direction) and standard deviation (variability) were calculated in four trials, each from two positions, with the patient tilted to the contralesional position (SPV-CL condition) and then to the ipsilesional position (SPV-IL condition). Patients were categorized into the non-pusher (n = 29) and pusher (n = 24) groups. In the SPV-CL trials, the tilt direction was significantly tilted contralesionally for the pusher group (− 6.3° ± 1.6°) compared with that for the non-pusher group (− 2.2° ± 1.8°; p < 0.001), with no significant difference in variability between the groups. In the SPV-IL trials, the tilt direction was not significantly different between the groups, but the variability was significantly higher in the pusher group (4.8° ± 2.0°) than in the non-pusher group (2.2° ± 1.3°; p < 0.001). The dependence of tilt direction and variability of SPV on the starting position in patients with PB differed from those noted in patients without PB. These results may help explain this abnormal posture and optimize neurological rehabilitation strategies for PB.

推手行为（PB）是一种严重的横向姿势障碍，涉及额状面的主观垂直姿势（SPV）紊乱。SPV 是通过确定从对侧倾斜位置和同侧倾斜位置开始的多次试验的平均值和标准差来测量的。然而，当被动倾斜到对侧位置与同侧位置时，有和没有 PB 患者的姿势表现是不同的。因此，我们假设SPV对起始位置的依赖性会受到PB的影响。对于 53 名半球卒中患者，使用闭眼非机动垂直板测量 SPV。在四项试验中计算平均值（倾斜方向）和标准差（变异性），每项试验来自两个位置，患者倾斜至对侧位置（SPV-CL 条件），然后倾斜至同侧位置（SPV-IL 条件） 。患者被分为非推动者组 ( n  = 29) 和推动者组 ( n  = 24)。在 SPV-CL 试验中，与非推动组 (− 2.2° ± 1.8°；p < 0.001) 相比，推动组 (− 6.3° ± 1.6°) 的倾斜方向显着向对侧倾斜，并且 没有组间变异性存在显着差异。在 SPV-IL 试验中，各组之间的倾斜方向没有显着差异，但推动组 (4.8° ± 2.0°) 的变异性显着高于非推动组 (2.2° ± 1.3°；p  < 0.001）。PB 患者的倾斜方向和 SPV 变异性对起始位置的依赖性与非 PB 患者不同。这些结果可能有助于解释这种异常姿势并优化 PB 的神经康复策略。