18 documents found, page 1 of 2
The effects of bromazepam over the central and frontal areas during a motor tas...
Fortunato,Suzete; Tanaka,Guaraci Ken; Araújo,Fernanda; Bittencourt,Juliana; Aprigio,Danielle; Gongora,Mariana; Teixeira,SilmarThe present study investigates the influence of bromazepam while executing a motor task. Specifically, we intend to analyze the changes in alpha absolute power under two experimental conditions, bromazepam and placebo. We also included analyses of theta and beta frequencies. We collected electroencephalographic data before, during, and after motor task execution. We used a Two Way ANOVA to investigate the condi...
Alpha power oscillation in the frontal cortex under Bromazepam and Modafinil ef...
Aprigio,Danielle; Adolfo,Washington; Bittencourt,Juliana; Gongora,Mariana; Teixeira,Silmar; Basile,Luis Fernando; Budde,Henning; Cagy,MauricioABSTRACTObjective Our aim was to investigate and compare the neuromodulatory effects of bromazepam (6 mg) and modafinil (200 mg) during a sensorimotor task analyzing the changes produced in the absolute alpha power.Method The sample was composed of 15 healthy individuals exposed to three experimental conditions: placebo, modafinil and bromazepam. EEG data were recorded before, during and after the execution of ...
Lower trait frontal theta activity in mindfulness meditators
Tanaka,Guaraci Ken; Peressutti,Caroline; Teixeira,Silmar; Cagy,Mauricio; Piedade,Roberto; Nardi,Antonio Egídio; Ribeiro,Pedro; Velasques,BrunaAcute and long-term effects of mindfulness meditation on theta-band activity are not clear. The aim of this study was to investigate frontal theta differences between long- and short-term mindfulness practitioners before, during, and after mindfulness meditation. Twenty participants were recruited, of which 10 were experienced Buddhist meditators. Despite an acute increase in the theta activity during meditatio...
Electroencephalographic findings in panic disorder
Carvalho,Marcele Regine de; Velasques,Bruna Brandao; Cagy,Mauricio; Marques,Juliana Bittencourt; Teixeira,Silmar; Nardi,Antonio Egidio; Piedade,RobertoSome studies have reported the importance of electroencephalography (EEG) as a method for investigating abnormal parameters in psychiatric disorders. Different findings in time and frequency domain analysis with regard to central nervous system arousal during acute panic states have already been obtained. This study aimed to systematically review the EEG findings in panic disorder (PD), discuss them having a cu...
Cognitive mechanisms and motor control during a saccadic eye movement task: evi...
Diniz,Claudia; Velasques,Bruna; Bittencourt,Juliana; Peressutti,Caroline; Machado,Sergio; Teixeira,Silmar; Santos,Joana Luz; Salles,José InácioThe saccadic movement is an important behavioral measure used to investigate several cognitive processes, including attention and sensorimotor integration. The present study aimed at investigating changes in beta coherence over frontal, motor, occipital, and parietal cortices during the performance of two different conditions of a prosacadic paradigm. The conditions involved a different pattern of stimulus pres...
Seasonal variation in hospitalizations due to heart failure in Niterói city, So...
Jorge,Jose Eduardo Loureiro; Cagy,Mauricio; Mesquita,Evandro Tinoco; Costa,Thiago L M da; Moscavitch,Samuel Datum; Rosa,Maria Luiza GarciaThe objective of the study was to describe seasonality of hospitalizations for heart failure in tropical climate as it has been described in cold climates. Seasonal Auto-regressive Integrated Moving-Average model was applied to time-series data of heart failure hospitalizations between 1996 and 2004 in Niteroi (Southeastern Brazil), collected from the Brazilian National Health Service Database. The standard sea...
The influence of bromazepam on cortical power distribution
Sampaio,Isabel; Puga,Fernanda; Veiga,Heloisa; Cagy,Mauricio; Piedade,Roberto; Ribeiro,PedroThe EEG has been widely employed in the assessment of electrophysiological changes induced by distinct medications. Its sensibility in detecting alterations produced by a specific substance may be enhanced by methods of quantitative analyses (qEEG). The present study aimed at investigating the modulatory effects of bromazepam on brain dynamics. The effects of bromazepam (3mg) on EEG power distribution were test...
Alpha absolute power: motor learning of practical pistol shooting
Domingues,Clayton Amaral; Machado,Sergio; Cavaleiro,Emerson Garcia; Furtado,Vernon; Cagy,Mauricio; Ribeiro,Pedro; Piedade,RobertoThe present study aimed at investigating changes in behavior (shooting precision) and electrophysiological variables (absolute alpha power) during the motor learning of practical pistol shooting. The sample was composed of 23 healthy subjects, right-handed, male, between 18 and 20 years of age. The task consisted of four learning blocks. A One-way ANOVA with repeated measures and a post hoc analysis were employ...
Posterior parietal cortex role in a sensorimotor task performance
Nader,Sergio; Machado,Sergio; Cunha,Marlo; Portella,Cláudio Elidio; Silva,Julio Guilherme; Velasques,Bruna; Bastos,Victor Hugo; Basile,LuisThis study aimed to elucidate electrophysiological and cortical mechanisms involved in anticipatory actions when individuals had to catch balls in free drop; specifically through quantitative electroencephalography (qEEG) alpha absolute power changes. The sample was composed for 23 health subjects, both sexes, with ages varying between 25 and 40 years, absence of mental and physical illness, right handed and do...
EEG spectral cohrence inter and intrahemispheric during catching object fall task
Portella,Cláudio Elidio; Silva,Julio Guilherme; Machado,Sergio; Velasques,Bruna; Bastos,Victor Hugo do Vale; Ferreira-Vorkapic,Camila; Terra,PatríciaThe aim of the present study was to evaluate coherence measures at Theta through qEEG during the accomplishment of a specific motor task. The sample consisted of 23 healthy individuals, both sexes, with ages varying between 25 and 40 years old. All subjects were submmitted to a specific motor task of cacthing sequences of falling balls. A three-way ANOVA was employed for the statistical analysis, which demonstr...