The effects of negative air ions on cognitive function: an event-related potential (ERP) study

Chu, Chien Heng; Chen, Su-Ru; Wu, Chih Han; Cheng, Yung Chao; Cho, Yu-Min; Chang, Yu Kai

doi:10.1007/s00484-019-01745-7

Cited by 22 publications

(15 citation statements)

References 47 publications

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“…Based on previous research [ 17 ] and visually inspecting the waveforms and topographic map, P2 was found to peak approximately 200 ms after the onset of stimuli and was mainly distributed in the frontal area. P3b is a positive-going amplitude peaking at 250 to 500 ms. We found the amplitude of P3b is usually highest on the scalp in parietal brain regions.…”

Section: Methodsmentioning

confidence: 95%

“…We make the following hypotheses: the reaction time (RT) of DD children is longer than that of non-dyslexic children and the accuracy is lower than that of non-dyslexic children. We believe that due to inhibitory deficits, DD children need to invest more cognitive resources when performing the Stroop test, so the ERP components of DD children should be larger than non-dyslexic children (we found that the ERP components of the Stroop test found in previous studies are inconsistent, [ 17 ] so we analyzed the ERP components obtained in the present study).…”

Section: Introductionmentioning

confidence: 88%

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Stroop interference in children with developmental dyslexia

et al. 2021

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Previous studies have identified inhibitory deficits in dyslexic children, but we have little understanding of their neural mechanisms, especially for Chinese children with developmental dyslexia. We used a double-blind controlled trial to study the electroencephalogram responses of dyslexic and non-dyslexic children when performing the Stroop color-word test. Behavioral data showed differences in response time and accuracy between the 2 groups. In the event-related potentials (ERP) results, dyslexic children displayed larger P2 and P3b on congruent trials, while non-dyslexic children displayed larger P2 and P3b on incongruent trials, the 2 groups showed opposite brain activation patterns on the Stroop test. Dyslexic children have poor inhibitory function, and this poor inhibition may be related to their abnormal brain activation patterns.

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Section: Methodsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 88%

Stroop interference in children with developmental dyslexia

et al. 2021

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“…As the hazard information remind people about the potential threat to their health and safety, this would enhance the motivation levels, and thus, would promote the appropriate safety behaviors (Laughery, 2006;Laughery and Wogalter, 2014). In sum, the hazard perception during the evaluation of safety signs can elicit the alertness/vigilance, arousal, and motivation of the people, which have been verified to be associated with the monitoring of conflict and error (Tsai et al, 2005;Bonnefond et al, 2011;Clayson et al, 2012;Chu et al, 2019;Qi and Gao, 2020). Therefore, we inferred that the safety signs conveying different levels of hazard may have impacts on the cognitive control.…”

Section: The Current Studymentioning

confidence: 97%

The Effect of Safety Signs on the Monitoring of Conflict and Erroneous Response

Duan

Li³

et al. 2022

Front. Psychol.

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The safety sign is important in our daily life and workplace to prevent potential safety issues. However, it remains undetermined whether the safety signs would influence the cognitive control ability of the people, which serves to guide the behaviors in a goal-directed manner. Therefore, this study aimed to examine the effect of safety signs on cognitive control by uncovering the behavioral performance and neural manifestations underlying the monitoring of conflict and error. The participants performed a flanker task after watching low- and high-hazard safety signs with the electroencephalogram (EEG) data recorded continually. The behavioral results indicated a classic congruency effect with higher accuracy rate and faster response time under a congruent condition compared to an incongruent condition. However, no hazard effect on behavioral performances was observed. The results of event-related potentials (ERPs) demonstrated a more negative N2 elicited by the incongruent trials and an increased (error-related negativity) ERN difference between the error and correct responses in the high-hazard condition compared to those in the low-hazard condition, implying that the monitoring of the conflict and error were both enhanced after watching the high-hazard safety signs. This study contributes to the understanding of the relationship between safety signs and cognitive control, and further expand the measurements that can be applied to assess the effectiveness of safety signs design.

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“…The modern negative ion air purifier (NIAP) technology, on the contrary, does not generate ozone but produce substantial amount of negative air ions. Negative ions have been credited with “mysterious” health benefits such as promoting physiological health and boosting immune systems 13,14 . A limited number of studies indeed have shown some health benefits of short‐term exposures to “pure” negative ions, when the technology was not used to remove airborne particles, in humans and animals 15‐17 …”

Section: Introductionmentioning

confidence: 99%

Negative ions offset cardiorespiratory benefits of PM _2.5 reduction from residential use of negative ion air purifiers

et al. 2020

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Negative ion air purifiers (NIAPs), as a less costly alternative to the HEPA filtration, have been increasingly deployed in China and potentially elsewhere. While reducing indoor concentrations of fine particulate matter (PM2.5), NIAPs generate massive amounts of negative ions that may be of health concern. We performed week‐long interventions with NIAPs in the dormitories of 56 healthy college students living in Beijing. In a randomized order, each student underwent a true and a sham NIAP session. Cardiorespiratory outcomes were measured before and after each session. The use of true NIAPs reduced indoor PM2.5 concentrations significantly, while notably increased negative ion levels. Increases in PM2.5 and negative ion (NI) exposure were independently associated with increased urinary concentration of malondialdehyde, a biomarker of systemic oxidative stress, resulting in a null net effect of NIAP on malondialdehyde. Likewise, no significant net effects of NIAPs were observed for other outcomes indicative of lung function, vascular tone, arterial stiffness, and inflammation. Our findings suggest that negative ions, possibly along with their reaction products with the room air constituents, adversely affect health. The downsides do not support the use of NIAPs as a health‐based mitigation strategy to reduce PM2.5 exposure, especially in residences with PM2.5 concentrations that are not extremely high.

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The effects of negative air ions on cognitive function: an event-related potential (ERP) study

Cited by 22 publications

References 47 publications

Stroop interference in children with developmental dyslexia

Stroop interference in children with developmental dyslexia

The Effect of Safety Signs on the Monitoring of Conflict and Erroneous Response

Negative ions offset cardiorespiratory benefits of PM _2.5 reduction from residential use of negative ion air purifiers

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The effects of negative air ions on cognitive function: an event-related potential (ERP) study

Cited by 22 publications

References 47 publications

Stroop interference in children with developmental dyslexia

Stroop interference in children with developmental dyslexia

The Effect of Safety Signs on the Monitoring of Conflict and Erroneous Response

Negative ions offset cardiorespiratory benefits of PM 2.5 reduction from residential use of negative ion air purifiers

Contact Info

Product

Resources

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Negative ions offset cardiorespiratory benefits of PM _2.5 reduction from residential use of negative ion air purifiers