The pathophysiological of attention-deficit hyperactivity disorder (ADHD) includes hypoactivation... more The pathophysiological of attention-deficit hyperactivity disorder (ADHD) includes hypoactivation of the dorso-lateral prefrontal cortex (DLPFC). Most studies have used anodal (excitatory) transcranial direct current stimulation (tDCS) to improve ADHD symptoms, however, a meta-analysis showed limited effect on improving inhibition, and no evidence of attention improvement. We thus present a pilot protocol for investigating the effect of other montage i.e. cathodal (inhibitory) tDCS on neurophysiological and behavioral measures in ADHD. Eleven participants underwent active (1.5 mA, 20 min) and sham cathodal tDCS over the left DLPFC for 5 consecutive days at a 1-month interval. Quantitative electroencephalography was recorded in a resting state with the eyes opened and closed during visual go/no-go and auditory continuous performance tasks at baseline, after five sessions, and at 1-week and 1-month follow-ups. Correct responses and omission errors were recorded. After five active sessions, alpha power increased in the right frontal area when the eyes were opened, and delta power in the left frontal area and omission errors decreased during go/no-go tasks, with no differences at follow-ups. The results revealed improvements in inhibitory control, but not for attention. No aftereffects were observed in either outcomes. However, the changes found in both hemispheres would probably support the hypothesis that cathodal stimulation over the left DLPFC may increase the activity of the right DLPFC via transcallosal inhibition. Results of this pilot trial would help to design and implement a full-scale randomized control trials for further ADHD research. This study was registered on ClinicalTrials.gov (NCT03955692).
This is an Open Access article distributed under the terms of the Creative Commons Attribution Li... more This is an Open Access article distributed under the terms of the Creative Commons Attribution License
Although aging population in Thailand is expected to increase rapidly, only one-sixteenth of the ... more Although aging population in Thailand is expected to increase rapidly, only one-sixteenth of the elderly engage in regularly physical exercise. Inactivity in ageing found to be associated with an increased incident of many chronic diseases such as hypertension, diabetes, Alzheimer's disease etc. Therefore performing regular exercise should recommend since it can exert its positive effect on the ageing’s physiological performance and brain functions. The purpose of this study was to investigate the acute effects of aerobic exercise by playing exergames on brain waves in sedentary elderly. Twenty volunteers aged 55 to 70 years (n=20; 10 male and 10 female) who did the exercise less than/equal two days per week and, no exergames experience. They were divided into two groups: control group (n=10) and exergames group (n=10). The exergames group was performed an aerobic exercise by playing exergames with moderate intensity (50% - 70% HRmax) for 20 minutes and recorded the EEG before a...
We examined effects of a 20-min nap following 3 h of sleep deprivation on brain wave activity, au... more We examined effects of a 20-min nap following 3 h of sleep deprivation on brain wave activity, auditory reaction time, the running-based anaerobic sprint test, leg muscle strength and the rating of perceived exertion in male college soccer players. Eleven players underwent three sleep conditions; normal sleep, sleep deprivation and 20-min nap after sleep deprivation. The sleep deprivation demonstrated an increase in the mean power of delta waves over the frontal area and a decrease in the mean power of alpha waves over the parietal area compared to the normal sleep. The nap and the sleep deprivation showed an increase in auditory reaction time compared with those in the normal sleep. The sleep deprivation demonstrated a decrease in the running-based anaerobic sprint test compared to the normal sleep, whereas the nap has partially reversed only minimal power and average power of the running-based anaerobic sprint test. The nap showed a recovery effect on leg muscle strength, but not ...
Purpose It is generally accepted that massage can provide a lot of benefits to human health, espe... more Purpose It is generally accepted that massage can provide a lot of benefits to human health, especially for the brain functions. Little is known about the effect of unilateral massage on the brain activities. Nowadays, Swedish massage is a modern massage technique that is popular in both treatment and research fields. The purpose of this paper is to investigate the effect of unilateral Swedish massage on brain activities with electroencephalography (EEG) recording. Design/methodology/approach In total, 18 healthy adult participants (5 men, 13 women) aged between 22 and 36 years were massaged over one side of arm, forearm, hand, neck and face. Then the same procedures were repeated to another side of the body. EEG was recorded before (baseline) and during each massage condition. The absolute power of four common brain waves consisting of δ (0.5-4 Hz), θ (4-8 Hz), α (8-13 Hz), and β activities (13-30 Hz) from the quantitative EEG analysis between baseline and each massage condition we...
Citronella oil is a famous odor and widely used in mosquito repellent application. However, the s... more Citronella oil is a famous odor and widely used in mosquito repellent application. However, the study of the effects of citronella oil on nervous system is rather limited. In this study we investigated the effects of inhaled citronella oil on emotional states and physiological parameters of the nervous system. Twenty healthy volunteers participated in this experiment. All subjects underwent autonomic nervous system recordings. These recordings included:, body temperature, heart rate, respiratory rate, and blood pressure; mood states were also evaluated as was electroencephalography (EEG) recording in pre-, during, and post-citronella inhalation The results were compared with control conditions. These assessments were measured before and after using a paired t-test statistical procedure. Our results indicated that citronella oil might be characterized onto the concept of "harmonization". Citronella significantly decreased blood pressure, heart rate, and respiratory rate aft...
Journal of the Medical Association of Thailand = Chotmaihet thangphaet
Investigate the effects of lavender oil on the central nervous system, autonomic nervous system, ... more Investigate the effects of lavender oil on the central nervous system, autonomic nervous system, and mood responses in humans after inhalation. Twenty healthy volunteers participated in the experiments. The present study assessed autonomic parameters such as blood pressure, heart rate, respiratory rate, and skin temperature to determine the arousal level of the autonomic nervous system. In addition, subjects were asked to estimate their mood responses such as feeling pleasant or unpleasant, uncomfortable, sensuality, relaxation, or refreshing in order to assess subjective behavioral arousal. Finally, electroencephalogram (EEG) was recorded from 31 electrodes on the scalp according to the international 10 to 20 system, and EEG power spectra were calculated by Fast Fourier Transform (FFT). Data was analyzed by comparing the effects of lavender oil on physiological and mood states with sweet almond oil. These assessments were measured before and after using paired t-test statistical pr...
Journal of the Medical Association of Thailand = Chotmaihet thangphaet, 2013
Sturge-Weber syndrome (SWS) is an uncommon neurocutaneous syndrome usually presenting with a tria... more Sturge-Weber syndrome (SWS) is an uncommon neurocutaneous syndrome usually presenting with a triad of cutaneous, neurological, and ophthalmological symptoms. The cutaneous lesion can be observed at birth in most cases while the symptoms of the nervous and ocular systems involvement usually appear later in life. The most common ocular manifestation in SWS is glaucoma, which can occur in the early-life period. The authors reported a case of SWS in which the symptoms of glaucoma rapidly developed within two weeks following an ophthalmologic evaluation that was initially negative at the age of one week.
A cross-sectional study to determine the prevalence of migraine in seventh grade Thai students in... more A cross-sectional study to determine the prevalence of migraine in seventh grade Thai students in 4 junior high schools in Bangkok, Thailand, according to the diagnostic criteria of the second edition of the Classification of Headache of the International Headache Society was conducted in July 2004. The study included a screening self-administered questionnaire and face-to-face interview with physical examination. The diagnosis of migraine was made and confirmed by 2 pediatric neurologists. All of 1789 students in participating schools completed the questionnaire. After 2 interviews, 248 students (13.8%) were diagnosed with migraine. The prevalence in girls was higher than that in boys (16.2% vs 11.7%). Migraine as
The pathophysiological of attention-deficit hyperactivity disorder (ADHD) includes hypoactivation... more The pathophysiological of attention-deficit hyperactivity disorder (ADHD) includes hypoactivation of the dorso-lateral prefrontal cortex (DLPFC). Most studies have used anodal (excitatory) transcranial direct current stimulation (tDCS) to improve ADHD symptoms, however, a meta-analysis showed limited effect on improving inhibition, and no evidence of attention improvement. We thus present a pilot protocol for investigating the effect of other montage i.e. cathodal (inhibitory) tDCS on neurophysiological and behavioral measures in ADHD. Eleven participants underwent active (1.5 mA, 20 min) and sham cathodal tDCS over the left DLPFC for 5 consecutive days at a 1-month interval. Quantitative electroencephalography was recorded in a resting state with the eyes opened and closed during visual go/no-go and auditory continuous performance tasks at baseline, after five sessions, and at 1-week and 1-month follow-ups. Correct responses and omission errors were recorded. After five active sessions, alpha power increased in the right frontal area when the eyes were opened, and delta power in the left frontal area and omission errors decreased during go/no-go tasks, with no differences at follow-ups. The results revealed improvements in inhibitory control, but not for attention. No aftereffects were observed in either outcomes. However, the changes found in both hemispheres would probably support the hypothesis that cathodal stimulation over the left DLPFC may increase the activity of the right DLPFC via transcallosal inhibition. Results of this pilot trial would help to design and implement a full-scale randomized control trials for further ADHD research. This study was registered on ClinicalTrials.gov (NCT03955692).
This is an Open Access article distributed under the terms of the Creative Commons Attribution Li... more This is an Open Access article distributed under the terms of the Creative Commons Attribution License
Although aging population in Thailand is expected to increase rapidly, only one-sixteenth of the ... more Although aging population in Thailand is expected to increase rapidly, only one-sixteenth of the elderly engage in regularly physical exercise. Inactivity in ageing found to be associated with an increased incident of many chronic diseases such as hypertension, diabetes, Alzheimer's disease etc. Therefore performing regular exercise should recommend since it can exert its positive effect on the ageing’s physiological performance and brain functions. The purpose of this study was to investigate the acute effects of aerobic exercise by playing exergames on brain waves in sedentary elderly. Twenty volunteers aged 55 to 70 years (n=20; 10 male and 10 female) who did the exercise less than/equal two days per week and, no exergames experience. They were divided into two groups: control group (n=10) and exergames group (n=10). The exergames group was performed an aerobic exercise by playing exergames with moderate intensity (50% - 70% HRmax) for 20 minutes and recorded the EEG before a...
We examined effects of a 20-min nap following 3 h of sleep deprivation on brain wave activity, au... more We examined effects of a 20-min nap following 3 h of sleep deprivation on brain wave activity, auditory reaction time, the running-based anaerobic sprint test, leg muscle strength and the rating of perceived exertion in male college soccer players. Eleven players underwent three sleep conditions; normal sleep, sleep deprivation and 20-min nap after sleep deprivation. The sleep deprivation demonstrated an increase in the mean power of delta waves over the frontal area and a decrease in the mean power of alpha waves over the parietal area compared to the normal sleep. The nap and the sleep deprivation showed an increase in auditory reaction time compared with those in the normal sleep. The sleep deprivation demonstrated a decrease in the running-based anaerobic sprint test compared to the normal sleep, whereas the nap has partially reversed only minimal power and average power of the running-based anaerobic sprint test. The nap showed a recovery effect on leg muscle strength, but not ...
Purpose It is generally accepted that massage can provide a lot of benefits to human health, espe... more Purpose It is generally accepted that massage can provide a lot of benefits to human health, especially for the brain functions. Little is known about the effect of unilateral massage on the brain activities. Nowadays, Swedish massage is a modern massage technique that is popular in both treatment and research fields. The purpose of this paper is to investigate the effect of unilateral Swedish massage on brain activities with electroencephalography (EEG) recording. Design/methodology/approach In total, 18 healthy adult participants (5 men, 13 women) aged between 22 and 36 years were massaged over one side of arm, forearm, hand, neck and face. Then the same procedures were repeated to another side of the body. EEG was recorded before (baseline) and during each massage condition. The absolute power of four common brain waves consisting of δ (0.5-4 Hz), θ (4-8 Hz), α (8-13 Hz), and β activities (13-30 Hz) from the quantitative EEG analysis between baseline and each massage condition we...
Citronella oil is a famous odor and widely used in mosquito repellent application. However, the s... more Citronella oil is a famous odor and widely used in mosquito repellent application. However, the study of the effects of citronella oil on nervous system is rather limited. In this study we investigated the effects of inhaled citronella oil on emotional states and physiological parameters of the nervous system. Twenty healthy volunteers participated in this experiment. All subjects underwent autonomic nervous system recordings. These recordings included:, body temperature, heart rate, respiratory rate, and blood pressure; mood states were also evaluated as was electroencephalography (EEG) recording in pre-, during, and post-citronella inhalation The results were compared with control conditions. These assessments were measured before and after using a paired t-test statistical procedure. Our results indicated that citronella oil might be characterized onto the concept of "harmonization". Citronella significantly decreased blood pressure, heart rate, and respiratory rate aft...
Journal of the Medical Association of Thailand = Chotmaihet thangphaet
Investigate the effects of lavender oil on the central nervous system, autonomic nervous system, ... more Investigate the effects of lavender oil on the central nervous system, autonomic nervous system, and mood responses in humans after inhalation. Twenty healthy volunteers participated in the experiments. The present study assessed autonomic parameters such as blood pressure, heart rate, respiratory rate, and skin temperature to determine the arousal level of the autonomic nervous system. In addition, subjects were asked to estimate their mood responses such as feeling pleasant or unpleasant, uncomfortable, sensuality, relaxation, or refreshing in order to assess subjective behavioral arousal. Finally, electroencephalogram (EEG) was recorded from 31 electrodes on the scalp according to the international 10 to 20 system, and EEG power spectra were calculated by Fast Fourier Transform (FFT). Data was analyzed by comparing the effects of lavender oil on physiological and mood states with sweet almond oil. These assessments were measured before and after using paired t-test statistical pr...
Journal of the Medical Association of Thailand = Chotmaihet thangphaet, 2013
Sturge-Weber syndrome (SWS) is an uncommon neurocutaneous syndrome usually presenting with a tria... more Sturge-Weber syndrome (SWS) is an uncommon neurocutaneous syndrome usually presenting with a triad of cutaneous, neurological, and ophthalmological symptoms. The cutaneous lesion can be observed at birth in most cases while the symptoms of the nervous and ocular systems involvement usually appear later in life. The most common ocular manifestation in SWS is glaucoma, which can occur in the early-life period. The authors reported a case of SWS in which the symptoms of glaucoma rapidly developed within two weeks following an ophthalmologic evaluation that was initially negative at the age of one week.
A cross-sectional study to determine the prevalence of migraine in seventh grade Thai students in... more A cross-sectional study to determine the prevalence of migraine in seventh grade Thai students in 4 junior high schools in Bangkok, Thailand, according to the diagnostic criteria of the second edition of the Classification of Headache of the International Headache Society was conducted in July 2004. The study included a screening self-administered questionnaire and face-to-face interview with physical examination. The diagnosis of migraine was made and confirmed by 2 pediatric neurologists. All of 1789 students in participating schools completed the questionnaire. After 2 interviews, 248 students (13.8%) were diagnosed with migraine. The prevalence in girls was higher than that in boys (16.2% vs 11.7%). Migraine as
Uploads