The effect of vision on top.down modulation of hand blink reflex

IF 0.4 4区医学 Q4 NEUROSCIENCES

Neurological Sciences and Neurophysiology Pub Date : 2021-01-01 DOI:10.4103/NSN.NSN_77_20

F. Çalıkuşu, A. Gündüz, M. Kiziltan

{"title":"The effect of vision on top.down modulation of hand blink reflex","authors":"F. Çalıkuşu, A. Gündüz, M. Kiziltan","doi":"10.4103/NSN.NSN_77_20","DOIUrl":null,"url":null,"abstract":"Objective: The magnitude of hand blink reflex (HBR) increases when a threatening stimulus is positioned in the peripersonal space (PPS) compared with stimulus in the extrapersonal space (EPS). We hypothesized that the reflex increase in PPS might change depending on whether the stimulus was seen. We aimed to investigate the alterations in HBR response to understand the effects of vision on cortical modulation of HBR. Methods: The HBR was recorded from 11 healthy volunteers while the hand was far away from the face (EPS), close to the face with eyes open (PPS-eyes open), and close to the face with eyes closed (PPS-eyes closed). Changes in the response magnitudes were compared between the three conditions. Results: HBR was obtained in all subjects. As expected, there was an increase in the reflex magnitude in the PPS-eyes open condition relative to EPS. In the PPS-eyes closed condition, the duration and latency were shorter and the area under the curve was significantly smaller compared with the PPS-eyes open condition. Conclusion: The enhancement of HBR in PPS is attributed to tonic top-down modulation. Our study provides evidence for the special sensory modulation of the PPS effect on HBR and may suggest cortical modulation of top-down modulation of brainstem neural circuits.","PeriodicalId":48555,"journal":{"name":"Neurological Sciences and Neurophysiology","volume":"38 1","pages":"6 - 11"},"PeriodicalIF":0.4000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Neurological Sciences and Neurophysiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.4103/NSN.NSN_77_20","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"NEUROSCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Objective: The magnitude of hand blink reflex (HBR) increases when a threatening stimulus is positioned in the peripersonal space (PPS) compared with stimulus in the extrapersonal space (EPS). We hypothesized that the reflex increase in PPS might change depending on whether the stimulus was seen. We aimed to investigate the alterations in HBR response to understand the effects of vision on cortical modulation of HBR. Methods: The HBR was recorded from 11 healthy volunteers while the hand was far away from the face (EPS), close to the face with eyes open (PPS-eyes open), and close to the face with eyes closed (PPS-eyes closed). Changes in the response magnitudes were compared between the three conditions. Results: HBR was obtained in all subjects. As expected, there was an increase in the reflex magnitude in the PPS-eyes open condition relative to EPS. In the PPS-eyes closed condition, the duration and latency were shorter and the area under the curve was significantly smaller compared with the PPS-eyes open condition. Conclusion: The enhancement of HBR in PPS is attributed to tonic top-down modulation. Our study provides evidence for the special sensory modulation of the PPS effect on HBR and may suggest cortical modulation of top-down modulation of brainstem neural circuits.

查看原文本刊更多论文

视觉对眨眼反射上下调节的影响

目的：与个人外空间（EPS）的刺激相比，当威胁性刺激位于人外空间（PPS）时，眨眼反射（HBR）的幅度增加。我们假设PPS的反射增加可能会随着是否看到刺激而改变。我们旨在研究HBR反应的改变，以了解视觉对HBR皮层调节的影响。方法：记录11名健康志愿者的HBR，同时手远离面部（EPS）、睁开眼睛靠近面部（PPS眼睛睁开）和闭着眼睛靠近面部。比较了三种条件下响应幅度的变化。结果：所有受试者均获得HBR。不出所料，PPS睁眼条件下的反射幅度相对于EPS有所增加。在PPS闭眼条件下，与PPS睁眼条件相比，持续时间和潜伏期更短，曲线下面积显著更小。结论：PPS中HBR的增强可归因于紧张性自上而下的调节。我们的研究为PPS对HBR的特殊感觉调节提供了证据，并可能提示脑干神经回路自上而下的皮层调节。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Neurological Sciences and Neurophysiology Neuroscience-Neurology

CiteScore

0.70

自引率

25.00%

发文量

审稿时长

26 weeks

期刊介绍： Neurological Sciences and Neurophysiology is the double blind peer-reviewed, open access, international publication organ of Turkish Society of Clinical Neurophysiology EEG-EMG. The journal is a quarterly publication, published in March, June, September and December and the publication language of the journal is English.