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  1. Article ; Online: Investigating the EEG Profile of Elite and Non-Elite Players in the Basketball Free Throw Task.

    Keshvari, Fatemeh / Farsi, Alireza / Abdoli, Behrooz

    Journal of motor behavior

    2023  Volume 56, Issue 1, Page(s) 91–102

    Abstract: This study aimed to investigate the electroencephalographic profile of elite and non-elite basketball players seconds before and during the basketball free throw. Sixteen male subjects in the elite group (national team/premier league players with an ... ...

    Abstract This study aimed to investigate the electroencephalographic profile of elite and non-elite basketball players seconds before and during the basketball free throw. Sixteen male subjects in the elite group (national team/premier league players with an average age of 22.06 ± 1.56) and 16 male non-elite subjects (university players with an average age of 22.37 ± 1.45) voluntarily participated in this research. Electroencephalographic data were measured from 28 cortical areas using a mobile wireless device. ANOVA with repeated measures were also performed to investigate the characteristics of theta, alpha, and beta frequency bands. The findings showed the higher cortical activity of the elite group. Different frequency bands exhibited similar asymmetry patterns, suggesting the higher activity of the left hemisphere in most of the homologous sites. Moreover, the activity of frequency bands in the left hemisphere rose by approaching the moment of throw. Furthermore, the activity of a limited number of right hemisphere sites increased by getting closer to the moment of action. In general, hemispheric asymmetry in favor of the left hemisphere has a cortical pattern, reflecting high-performance activities. In addition, the characteristics of different frequency bands of hemispheres are directed toward increasing cognitive processing, attention focusing, and inhibiting irrelevant information.
    MeSH term(s) Humans ; Male ; Young Adult ; Adult ; Basketball ; Electroencephalography ; Attention ; Mental Processes
    Language English
    Publishing date 2023-12-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2066611-1
    ISSN 1940-1027 ; 0022-2895
    ISSN (online) 1940-1027
    ISSN 0022-2895
    DOI 10.1080/00222895.2023.2251912
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Epidemiological Features of Injured Patients Examined by Tehran Emergency Medical Service Technicians.

    Saberian, Peyman / Farhoud, Amir Reza / Hasani-Sharamin, Parisa / Moghaddami, Maryam / Keshvari, Fatemeh

    Advanced journal of emergency medicine

    2019  Volume 3, Issue 4, Page(s) e40

    Abstract: Introduction: Knowledge of epidemiological aspects can be a useful guide in determining the resources for better prevention and management of injuries. There are some performed studies on this topic in Iran, based on the limited hospital database. ... ...

    Abstract Introduction: Knowledge of epidemiological aspects can be a useful guide in determining the resources for better prevention and management of injuries. There are some performed studies on this topic in Iran, based on the limited hospital database. However, to the best of our knowledge, there is not any survey based on the pre-hospital database.
    Objective: The purpose of this study was to assess baseline characteristics of the traumatic patients according to the records of Tehran Emergency Medical Service (EMS) Center to present descriptive statistics of their epidemiological features.
    Method: This cross-sectional study was conducted retrospectively, using Tehran EMS center data registry. All traumatic patients examined by EMS in Tehran, Iran following call to emergency medical dispatcher were included. By reviewing the EMS technicians' mission forms, required data were extracted. The mission form contains information such as age, sex, injured location, damage mechanism, accident location (home, workplace, street), time of call, the outcome of the patient's ambulance mission and the results of the assessment of the technician, etc.
    Results: Totally, 56612 injured cases with the mean age of 33.1±15.6 years were examined by EMS during one-year study period of whom 80.4% were male. Crude Incidence Rate was 10.5 and 2.5 per 1000 in male and female, respectively. Traffic accident and then fall were the two most prevalent mechanism of injuries. All types of injuries were significantly more prevalent in males (P<0.001). Most injuries were in winter season with 15570 cases (27.5%). Car accident was prevalent in winter and other injuries were significantly prevalent in spring (P<0.001). The most frequent places of injuries occurred on main roads and streets (55.7%). All of the road-related injuries was prevalent in winter, whereas injuries in other places were prevalent in spring (P<0.001). Most of the cases (78.3%) were transferred to the health centers, but 20.7% did not consent to treatment and transmission. Only 222 cases (0.4%) died, that 95% was due to traffic accident. there was a significant relationship between the number of injured organs and the death; So that the highest death rate occurred for those with more than 5 injured organs (P <0.001).
    Conclusion: Based on the findings, traffic accident was the most frequent cause of trauma that led to visiting a traumatic patient by an EMS technician in Tehran, Iran. Injuries in all age groups were more prevalent in males, and the involvement of 5 or more injured organ had a significant relationship with mortality.
    Language English
    Publishing date 2019-06-25
    Publishing country Iran
    Document type Journal Article
    ISSN 2588-400X
    ISSN (online) 2588-400X
    DOI 10.22114/ajem.v0i0.198
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: The polarity-dependent effects of the bilateral brain stimulation on working memory.

    Keshvari, Fatemeh / Pouretemad, Hamid-Reza / Ekhtiari, Hamed

    Basic and clinical neuroscience

    2014  Volume 4, Issue 3, Page(s) 224–231

    Abstract: Introduction: Working memory plays a critical role in cognitive processes which are central to our daily life. Neuroimaging studies have shown that one of the most important areas corresponding to the working memory is the dorsolateral prefrontal cortex ...

    Abstract Introduction: Working memory plays a critical role in cognitive processes which are central to our daily life. Neuroimaging studies have shown that one of the most important areas corresponding to the working memory is the dorsolateral prefrontal cortex (DLFPC). This study was aimed to assess whether bilateral modulation of the DLPFC using a noninvasive brain stimulation, namely transcranial direct current stimulation (tDCS), modifies the working memory function in healthy adults.
    Methods: In a randomized sham-controlled cross-over study, 60 subjects (30 Males) received sham and active tDCS in two subgroups (anode left/cathode right and anode right/cathode left) of the DLPFC. Subjects were presented working memory n-back task while the reaction time and accuracy were recorded.
    Results: A repeated measures, mixed design ANOVA indicated a significant difference between the type of stimulation (sham vs. active) in anodal stimulation of the left DLPFC with cathodal stimulation of the right DLPFC [F(1,55)= 5.29, P=0.019], but not the inverse polarity worsened accuracy in the 2-back working memory task. There were also no statistically significant changes in speed of working memory [F(1,55)= 0.458,P=0.502] related to type or order of stimulation.
    Discussion: The results would imply to a polarity dependence of bilateral tDCS of working memory. Left anodal/ right cathodal stimulation of DLPFC could impair working memory, while the reverser stimulation had no effect. Meaning that bilateral stimulation of DLFC would not be a useful procedure to improve working memory. Further studies are required to understand subtle effects of different tDCS stimulation/inhibition electrode positioning on the working memory.
    Language English
    Publishing date 2014-08-15
    Publishing country Iran
    Document type Journal Article
    ZDB-ID 2652444-2
    ISSN 2228-7442 ; 2008-126X
    ISSN (online) 2228-7442
    ISSN 2008-126X
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: State dependent effect of transcranial direct current stimulation (tDCS) on methamphetamine craving.

    Shahbabaie, Alireza / Golesorkhi, Mehrshad / Zamanian, Behnam / Ebrahimpoor, Mitra / Keshvari, Fatemeh / Nejati, Vahid / Fregni, Felipe / Ekhtiari, Hamed

    The international journal of neuropsychopharmacology

    2014  Volume 17, Issue 10, Page(s) 1591–1598

    Abstract: Transcranial direct current stimulation (tDCS) has been shown to modulate subjective craving ratings in drug dependents by modification of cortical excitability in dorsolateral prefrontal cortex (DLPFC). Given the mechanism of craving in methamphetamine ( ...

    Abstract Transcranial direct current stimulation (tDCS) has been shown to modulate subjective craving ratings in drug dependents by modification of cortical excitability in dorsolateral prefrontal cortex (DLPFC). Given the mechanism of craving in methamphetamine (meth) users, we aimed to test whether tDCS of DLPFC could also alter self-reported craving in abstinent meth users while being exposed to meth cues. In this double-blinded, crossover, sham-controlled study, thirty two right-handed abstinent male meth users were recruited. We applied 20 min 'anodal' tDCS (2 mA) or 'sham' tDCS over right DLPFC in a random sequence while subjects performed a computerized cue-induced craving task (CICT) starting after 10 min of stimulation. Immediate craving was assessed before the stimulation, after 10 min of tDCS, and after tDCS termination by visual analog scale (VAS) of 0 to 100. Anodal tDCS of rDLPFC altered craving ratings significantly. We found a significant reduction of craving at rest in real tDCS relative to the sham condition (p = 0.016) after 10 min of stimulation. On the other hand, cue-induced VAS craving was rated significantly higher in the real condition in comparison with sham stimulation (p = 0.012). Our findings showed a state dependent effect of tDCS: while active prefrontal tDCS acutely reduced craving at rest in the abstinent meth users, it increased craving during meth-related cue exposure. These findings reflect the important role of the prefrontal cortex in both cue saliency evaluation and urge to meth consumption.
    MeSH term(s) Adult ; Amphetamine-Related Disorders/psychology ; Amphetamine-Related Disorders/therapy ; Craving ; Cross-Over Studies ; Cues ; Diagnosis, Computer-Assisted ; Double-Blind Method ; Humans ; Male ; Photic Stimulation ; Prefrontal Cortex/physiology ; Psychiatric Status Rating Scales ; Transcranial Direct Current Stimulation/methods ; Treatment Outcome ; Visual Analog Scale
    Language English
    Publishing date 2014-10
    Publishing country England
    Document type Clinical Trial ; Journal Article ; Randomized Controlled Trial ; Research Support, Non-U.S. Gov't
    ZDB-ID 1440129-0
    ISSN 1469-5111 ; 1461-1457
    ISSN (online) 1469-5111
    ISSN 1461-1457
    DOI 10.1017/S1461145714000686
    Database MEDical Literature Analysis and Retrieval System OnLINE

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