Older adults exhibit greater multisensory response time (RT) facilitation by violating the race model more than young adults; this is commonly interpreted as an enhancement in perception. Older adults typically exhibit wider temporal binding windows (TBWs) and points of subjective simultaneity (PSS) that typically lie farther from true simultaneity as compared to young adults when simultaneity judgment (SJ) and temporal-order judgment (TOJ) tasks are utilized; this is commonly interpreted as an impairment in perception. Here we explore the relation between the three tasks in order to better assess audiovisual multisensory temporal processing in both young and older adults. Our results confirm previous reports showing that audiovisual RT, TBWs and PSSs change with age; however, we show for the first time a significant positive relation between the magnitude of race model violation in young adults as a function of the PSS obtained from the audiovisual TOJ task (r: 0.49, p: 0.007), that is absent in older adults (r: 0.13, p: 0.58). Furthermore, we find no evidence for the relation between race model violation as a function of the PSS obtained from the audiovisual SJ task in both young (r: -0.01, p: 0.94) and older adults (r: 0.1, p: 0.66). Our results confirm previous reports that (i) audiovisual temporal processing changes with age; (ii) distinct processes are likely involved in simultaneity and temporal-order perception; and (iii) common processing between race model violation and temporal-order judgment is impaired in the elderly.

中文翻译：

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老年人多感觉过程变化的时间指标。

老年人比年轻人更违反种族模型，从而表现出更大的多感官反应时间（RT）促进作用；通常将其解释为感知力的增强。当使用同步判断（SJ）和时间顺序判断（TOJ）任务时，与年轻人相比，老年人通常表现出更宽的时间绑定窗口（TBW）和主观同时性（PSS）点，而这些点通常距离真实同时性更远。这通常被解释为感知障碍。在这里，我们探索这三个任务之间的关系，以便更好地评估年轻人和老年人中的视听多感觉时间处理。我们的结果证实了以前的报告，这些报告显示视听RT，TBW和PSS随着年龄的增长而变化；然而，我们首次展示了年轻人的种族模型违规程度与从视听TOJ任务获得的PSS之间的显着正相关（r：0.49，p：0.007），而老年人中则不存在（r ：0.13，p：0.58）。此外，我们没有证据表明在年轻人（r：-0.01，p：0.94）和老年人（r：0.1，p：0.66）中，种族模型违规与从视听SJ任务获得的PSS的关系。 。我们的结果证实了以前的报道：（i）视听时间处理随年龄变化；（ii）同步和时间顺序感知可能涉及不同的过程；（iii）老年人的种族模型违背和时间顺序判断之间的共同处理受到损害。