The aim of this experiment was to investigate the postural response to specific types of long-term memory (episodic vs. semantic) in young adults performing an unperturbed upright stance. Although a similar level of steadiness (mean distance) was observed, dual tasking induced a higher velocity, more energy in the higher frequency range (power spectral density), and less regularity (sample entropy) compared with a simple postural task. Moreover, mean velocity was always greater in the semantic than in the episodic task. The differences in postural control during dual tasking may result from the types of processes involved in the memory task. Findings suggest a spatial process sharing between posture and episodic memory.

本实验的目的是调查在表现出不受干扰的直立姿势的年轻成年人中，对特定类型的长期记忆的姿势反应（情景与语义）。尽管观察到了相似的稳定度（平均距离），但与简单的姿势任务相比，双重任务诱导了更高的速度，更高频率范围内的更多能量（功率谱密度）和更少规律性（样本熵）。而且，语义上的平均速度总是比情节任务中的平均速度大。双重任务期间的姿势控制上的差异可能是由于存储任务涉及的过程类型引起的。研究结果表明，姿势和情景记忆之间存在空间共享的过程。