Electroencephalography (EEG)-Based Neural Emotional Response to Flower Arrangements (FAs) on Normal Elderly (NE) and Cognitively Impaired Elderly (CIE)

A Study of Brain Function Characteristics of Service Members at High Risk for Accidents in the Military

Military accidents are often associated with stress and depressive psychological conditions among soldiers, and they often fail to adapt to military life. Therefore, this study analyzes whether there are differences in EEG and pulse wave indices between general soldiers and three groups of soldiers who have not adapted to military life and are at risk of accidents. Data collection was carried out using a questionnaire and a device that can measure EEG and pulse waves, and data analysis was performed using SPSS. The results showed that the concentration level and brain activity indices were higher in the general soldiers and the soldiers in the first stage of accident risk. The body stress index was higher for each stage of accident risk, and the physical vitality index was higher for general soldiers. Therefore, it can be seen that soldiers who have not adapted to military life and are at risk of accidents have somewhat lower concentration and brain activity than general soldiers, and have symptoms of stress and lethargy. The results of this study will contribute to reducing human accidents through EEG and pulse wave measurements not only in the military but also in occupations with a high risk of accidents such as construction.

Horticultural therapy for stress reduction: A systematic review and meta-analysis

Introduction

Horticultural therapy has been increasingly accepted as a non-pharmacological stress reduction treatment. Previous studies have demonstrated its therapeutic effects, with the effect varying according to the populations, settings, and interventions of horticultural therapy. This study aimed to provide a comprehensive review of the current literature regarding the effectiveness of horticultural therapy in reducing stress.

Methods

We selected databases including PubMed, Cochrane Library, Embase, Web of Science, China National Knowledge Infrastructure, and VIP Data as our data source, and the original search was completed in January 2023.

Results

Our results showed significantly increased effects of horticultural therapy on psychological indicators compared to a control group, but an insignificant effect on physiology indicators. The result of the subgroup analysis demonstrated that the stress-reducing effects of horticultural therapy were related to the characteristics of the population and indoor and virtual areas were the most effective setting for horticultural therapy. At the same time, a total duration of 100-500 minutes provided better effects of stress reduction.

Discussion

We also developed a theoretical framework based on a "Participants-Settings-Interventions" structure for horticulture therapy in terms of its stress-reduction effects, to provide a reference for future horticultural therapy activities.

Neuro-emotions based on electroencephalograph response to different color Ardisia mamillata Hance plants in elderly people with and without cognitive impairment

Background

Given the aging population, the quality of mental health of elderly people deserves special attention. The aims of this study were (1) to assess the difference of neuro-emotion based on EEG from the cognitively impaired elderly (CNE) and the cognitively normal elderly (CIE) participants viewing different color Ardisia mamillata Hance and (2) to determine which color Ardisia mamillata Hance has greater benefits for boosting their neuro-emotions.

Methods

The cognitive function of the participants was judged by using the revised Chinese version of the Mini-Mental State Examination (MMSE) scale combined with the daily cognitive performance of the participants, and the participants were divided into the cognitive normal elderly (CNE) and the cognitive impairment elderly (CIE). A total of 10 CNE volunteers and 10 CIE volunteers were recruited as participants for this study. For this study, two varieties of Ardisia mamillata Hance, green tiger tongue (GTT) with green leaves and red tiger tongue (RTT) with reddish brown leaves, were observed as plant materials. In total, six emotional indexes, including stress, engagement, interest, excitement, focus, and relaxation, were then measured by electroencephalography (EEG).

Results

RTT had the most positive effect on EEG neuro-emotion in the CNE group, with significant reductions in stress, engagement, and focus in the RTT test, while the combination of GTT+RTT had a positive effect on EEG neuro-emotions in the CIE group, with significant reductions in engagement and focus in the GTT+RTT test. No statistically significant differences were found for the interest, excitement, and relaxation index in the CNE and CIE participants in all tests.

Conclusion

Significant reductions were observed in stress, engagement, and focus values of the CIE participants in the RTT test, which indicated that the CNE participants were more relaxed. RTT is a reddish brown and warm color plant, so the CNE individuals should always have the warm color plants indoors or outdoors, which could help boost their neuro-emotions. Significant reductions were observed in engagement and focus values of the CIE participants in the GTT+RTT test, which indicated that the CIE participants were more relaxed. The combination of GTT+RTT test shows the combination cold and warm color plants; therefore, the CIE individuals should always have a combination of cool and warm color plants indoors or outdoors, which could help boost their EEG neuro-emotions.

Psychophysiological Responses of Cut Flower Fragrances as an Olfactory Stimulation by Measurement of Electroencephalogram in Adults

Horticultural therapy (HT) is green care that can help improve and recover the health of modern people living in cities through natural experiences. Many studies have been conducted to determine HT's therapeutic effects and underlying mechanisms, but investigation for developing readily applicable clinical techniques is insufficient. We aimed to investigate adults' brain activity and emotional state during flower arrangement (FA) with different flowers in an HT program. We recruited thirty adults and used a randomized cross-over study method to set them to participate in five FA tasks at 90-s intervals. While performing FA tasks, the participants' prefrontal cortex brain waves were measured by a wireless electroencephalography device and their emotional states between FA tasks were measured by questionnaires. Results showed that each FA task resulted in a different attention level of the participants. The participants showed the highest attention level during FA with stocks and carnations, while FA with lilies showed the lowest attention level among the five FA tasks. Instead, the participants showed the highest arousal, tension, and anxiety for emotional states during FA with lilies. Therefore, this study confirmed the differences in attention level and emotional changes according to flower types for using clinical techniques of HT for various clients.

Electroencephalography-Based Neuroemotional Responses in Cognitively Normal and Cognitively Impaired Elderly by Watching the Ardisia mamillata Hance with Fruits and without Fruits

BACKGROUND

The purpose of this study is to explore the difference between the indexes of neuro-emotion between the cognitively normal elderly (CNE) and cognitively impaired elderly (CIE) while viewing the Ardisia mamillata Hance with red fruit (F) and without red fruit (NF) to determine which kind of the Ardisia mamillata Hance would be more beneficial to the participants' neuro-emotions.

METHODS

Nine CNE individuals and nine CIE individuals, ranging in age from 80-90 years old, participated in this study and signed the informed consent form before beginning the experiment. Six mood indicators (engagement, excitement, focus, interest, relaxation, and stress) were measured by an EEG headset during the participants' viewing of the NF, F, and NF + F.

RESULTS

For the CNE group, their engagement, excitement, and focus values were the lowest, while their interest value was the highest when they view the NF + F; therefore, we obtain the results that the combination of NF + F was the most beneficial to their EEG emotions. For the CIE group, the combination of NF + F increased their interest score, but decreased their focus score, which indicated that the NF + F was the most beneficial to their neuro-emotions.

CONCLUSIONS

This study concluded that the combination of plants with and without fruits was most beneficial to the neural emotions of both groups of elderly people. Especially for the CIE, plants with larger and warmer colors, such as yellow, red, and orange fruits, should be considered for installation indoors or outdoors, as this would be better for their emotional well-being.

Relationship between PSD of Park Green Space and Attention Restoration in Dense Urban Areas

Research shows that stress, a common problem in densely populated cities, can be relieved by exposure to the natural environment. As great significance has been attached to the relationship between the urban environment and public health, this paper aims to study the relationship and interaction between the perceived sensory dimensions of urban park green space, attention restoration, and state empathy. Therefore, we conducted an on-site questionnaire (PSD Scale) survey in four typical parks in Chengdu and recorded age, sex, daily stress, frequency of visits to parks, and other basic information from the respondents. In the survey and visit, we found that the group structure in the recreation area comprises chiefly of a few transient unfamiliar travelers and most long-haul neighborhood sightseers. Among long-haul vacationers, the greater part of them are moderately aged and older individuals in the encompassing local locations, whose lives are, for the most part, quick and proficient. Hence, to mirror the populace attributes of high-thickness metropolitan parks and to feature the agent bunches that have lived in the parks from here onward, indefinitely quite a while, the chosen bunches are somewhere in the range of 35 and 65 years old (half male and half female), so make sure there are no ailments, no drinking, and no late evenings in the earlier days, so a specific actual fundamental belief is kept up with. The main part of the exercise focused on the perceived dimension, state empathy, and attention restoration. The software SPSS24.0 was applied to the test of the validity and reliability of the perceived sensory dimension (PSD) Scale, and then the important correlation between the perceived sensory dimensions in the parks and visitors’ attention restoration was analyzed through multiple linear regression. Finally, the moderating effect of state empathy was tested by PROCESS. The findings show that (1) only seven dimensions in the PSD Scale are effective; (2) Serene and Refuge in the perceived sensory dimensions have a significant effect on the restorative components of attention. (3) Except for the dimensions of Rich in Species and Refuge, empathy enhanced the moderation effect in the interaction between the other five dimensions of the Perceived Restorative Scale (PRS), especially in the interaction between the Social and PRS dimensions. However, this topic needs to be further explored to provide a scientific basis and design strategy for research on the restoration potential of urban park green space in high-density urban areas.