Long-term physical activity modifies automatic visual processing
Long-term physical activity modifies automatic visual processing
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DOI：
10.1080/1612197x.2017.1321031
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发表时间：
2019-01-01
影响因子：
3.3
通讯作者：
Tarkka, Ina M.
中科院分区：
文献类型：
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作者：
Pesonen, Heidi;Savic, Andrej M.;Tarkka, Ina M.
电生理注册的视觉失配负性（vMMN）是人类视觉皮层自动视觉加工的表征。由于体育活动（PA）通常有利于脑血管功能，我们想知道自动视觉加工是否受到PA的影响。我们研究了32名健康年轻男性长期休闲时间PA与视觉前认知加工之间的关系。根据参与者过去三年的业余时间PA记录，将他们分为活跃组（n = 16）和不活跃组（n = 16）。采用带视觉条的被动古怪范式脑电图记录vMMN。当被试的注意力被引导到音频播放时，随机呈现不同方向的标准刺激（90%）和偏差刺激（10%）。不涉及视觉任务。在刺激后100-300 ms的窗口内，产生vMMN的差异波形，并测定峰值潜伏期和信号积分。活跃参与者的vMMN潜伏期较不活跃参与者短。观察到活跃参与者枕区积分值较大的趋势，尽管不显著。与不运动的参与者相比，运动参与者的枕区对异常刺激的自动处理速度更快。这可能意味着，那些习惯性运动的人早期的无参与视觉处理能力增强。
Electrophysiologically registered visual mismatch negativity (vMMN) is known to represent automatic visual processing in human visual cortex. Since physical activity (PA) is generally beneficial to cerebrovascular function, we wanted to find out if automatic visual processing is affected by PA. We investigated the connection between long-term leisure-time PA and precognitive visual processing in 32 healthy young males. Participants were divided into active (n = 16) and inactive (n = 16) group according to their leisure-time PA records from the past three years. vMMN was recorded with electroencephalogram using passive oddball paradigm with visual bars. Standard (90%) and deviant (10%) stimuli in different orientations were presented randomly while participant's attention was directed to an audio play. No visual task was involved. vMMN difference waveforms were generated and peak latencies and signal integrals were determined in post-stimulus window of 100-300 ms. vMMN latencies were shorter in active participants compared to inactive ones in the occipital cortex. A trend towards larger integral values in occipital area in active participants was observed, albeit non-significant. Physically active participants showed faster automatic processing of deviant stimuli compared to inactive ones in the occipital area. This may imply enhanced early non-attended visual processing in those individuals who are habitually physically active.