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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
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Nursing interventions are chosen as part of the planning process to achieve patient outcomes. Once nursing diagnoses are determined, the goals and outcomes are specified, then the nursing interventions are selected and individualized according to the patient's situation.
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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
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An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
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Interfaz cerebro-computadora no invasiva de grafeno con registro de EEG y estimulación acústico-óptica para la

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Este estudio presenta nuevos electrodos de grafeno vertical dopado con sodio (Na-VG) para interfaces cerebro-computadora (BCI) estables a largo plazo. Estos electrodos permiten el monitoreo y la intervención no invasivos para la salud cognitiva y emocional.

Palabras clave:
Na-dopedinterfaz cerebro-computadoraestimulación de sonido y luzgrafeno verticaldiadema EEG inalámbrica

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Área de la Ciencia:

  • Ingeniería Biomédica
  • Neurociencia
  • Ciencia de Materiales

Sus antecedentes:

  • Las interfaces cerebro-computadora (BCI) portátiles no invasivas son cruciales para la rehabilitación neurológica y el monitoreo de la salud.
  • La adopción generalizada de las BCI se ve obstaculizada por la necesidad de electrodos secos/semisecos estables a largo plazo y hardware liviano.

Objetivo del estudio:

  • Desarrollar nuevos electrodos de grafeno vertical dopado con sodio (Na-VG) para un rendimiento mejorado de la BCI.
  • Crear un sistema BCI portátil, estable y liviano para monitoreo e intervención no invasiva.

Principales métodos:

  • Fabricación de electrodos Na-VG utilizando fluidos de sudor y tisulares como electrolitos.
  • Evaluación de la impedancia electrodo-piel y la estabilidad a largo plazo (36 días) de un gorro de EEG de 20 canales.
  • Desarrollo de una BCI portátil con diadema Na-VG que integra estimulación de sonido y luz y adquisición de EEG.

Principales resultados:

  • Se logró una impedancia extremadamente baja entre el electrodo y la piel (4.22 ± 0.50 kΩ a 10 Hz).
  • Se demostró una alta relación señal-ruido del ritmo α (5.06-14.22 dB) durante 36 días.
  • Se mostraron mejoras significativas en la vigilancia, la actividad neuronal, la frecuencia cardíaca, la emoción y la excitación (proporción de nivel moderado del 84-100%) con una estimulación coordinada de sonido de 40 Hz y luz de 10 Hz.

Conclusiones:

  • Los electrodos Na-VG ofrecen una estrategia novedosa para aplicaciones BCI estables y livianas a largo plazo.
  • El sistema BCI portátil desarrollado monitorea e interviene eficazmente en los estados emocionales y cognitivos.
  • Esta tecnología es prometedora para el monitoreo y tratamiento no invasivos de afecciones neurológicas y psicológicas.