Doughty Michael J
Glasgow-Caledonian University, Department of Vision Sciences, Scotland.
Optom Vis Sci. 2002 Jul;79(7):439-47. doi: 10.1097/00006324-200207000-00013.
To further assess the spontaneous eyeblink rate (SEBR) in primary gaze in young adults to further define the causes of variance in this activity.
Nonconcealed video recordings were made of 61 white adults (30 males), aged 18 to 28 years, while silently directing their gaze to a 2-m-distant, 35-mm-high target under 350 lux illumination. An event marker was used to trace the video recordings in real time.
The overall SEBR was 10.3 +/- 3.1 eyeblinks/min (+/- SD) and the inter-eyeblink interval (IEBI) was 6.4 +/- 2.4 s, with no difference being detected between men and women (p > 0.1). There was no evidence of substantial time-dependent change in SEBR during the 5-min recording period. As assessed on a single occasion, it was noted that the subjects could display one of three patterns of eyeblink activity, namely irregular, J-type, or symmetrical. Both the SEBR and IEBI values were statistically different (p < or = 0.05) for the three patterns, with the highest SEBR values (12.3 +/- 2.4 eyeblinks/min) and lowest IEBI values (5.1 +/- 1.3 s) being observed for those with a symmetrical eyeblink pattern.
Different patterns of spontaneous eyeblink activity can result in differences in the SEBR and IEBI values. It is proposed that the pattern of spontaneous eyeblink activity where there are similar intervals between each eyeblink event should be referred to as a "normal" (rather than symmetrical) pattern and should be considered as the normal eyeblink activity, both from a physiological and statistical perspective.
进一步评估年轻成年人在注视正前方时的自发眨眼率（SEBR），以进一步明确该活动中差异的原因。
对61名18至28岁的白人成年人（30名男性）进行非隐蔽式视频记录，他们在350勒克斯光照下，静静地注视2米远处、35毫米高的目标。使用事件标记实时追踪视频记录。
总体SEBR为10.3±3.1次眨眼/分钟（±标准差），眨眼间隔（IEBI）为6.4±2.4秒，男性和女性之间未检测到差异（p>0.1）。在5分钟的记录期内，没有证据表明SEBR有显著的时间依赖性变化。单次评估时，注意到受试者可表现出三种眨眼活动模式之一，即不规则型、J型或对称型。三种模式的SEBR和IEBI值在统计学上均有差异（p≤0.05），对称眨眼模式者的SEBR值最高（12.3±2.4次眨眼/分钟），IEBI值最低（5.1±1.3秒）。
自发眨眼活动的不同模式可导致SEBR和IEBI值的差异。建议将每次眨眼事件间隔相似的自发眨眼活动模式称为“正常”（而非对称）模式，且从生理和统计学角度均应视为正常眨眼活动。
