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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

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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.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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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 I: Taxonomy of Nursing Interventions01:03

Nursing Interventions I: Taxonomy of Nursing Interventions

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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.
A nursing intervention is a treatment or action based on scientific concepts and knowledge from the nursing, behavioral, and physical sciences. Identifying and prioritizing nursing interventions based on the desired outcome...
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Nursing Interventions II: Selecting and Classifying the Nursing Interventions01:29

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Creating and executing a nursing diagnosis helps nurses plan care and guide patient, family, and community interventions. They are developed based on a patient's physical evaluation and support measuring the outcomes. It is not recommended to select random interventions throughout the planning process. Instead, consider the following six essential factors when choosing interventions:
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Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

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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.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
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ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

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An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
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Related Experiment Video

Updated: Feb 1, 2026

Using an EEG-Based Brain-Computer Interface for Virtual Cursor Movement with BCI2000
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Noninvasive Graphene Brain-Computer Interface Integrating EEG Recording and Acoustic-Optical Stimulation for Rhythm

Yongtian Ma1, Hongji Li1, Wei Li1

  • 1Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Life and Health Detection, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, P. R. China.

Advanced Healthcare Materials
|January 31, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces novel sodium-doped vertical graphene (Na-VG) electrodes for stable, long-term brain-computer interfaces (BCIs). These electrodes enable noninvasive monitoring and intervention for cognitive and emotional health.

Keywords:
Na‐dopedbrain–computer interfacesound–light stimulationvertical graphenewireless EEG headband

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Materials Science

Background:

  • Noninvasive wearable brain-computer interfaces (BCIs) are crucial for neurological rehabilitation and health monitoring.
  • Widespread adoption of BCIs is hindered by the need for stable, long-term dry/semi-dry electrodes and lightweight hardware.

Purpose of the Study:

  • To develop novel sodium-doped vertical graphene (Na-VG) electrodes for enhanced BCI performance.
  • To create a stable, lightweight, wearable BCI system for monitoring and noninvasive intervention.

Main Methods:

  • Fabrication of Na-VG electrodes utilizing sweat and tissue fluids as electrolytes.
  • Evaluation of electrode-skin impedance and long-term stability (36 days) of a 20-channel EEG cap.
  • Development of a wearable Na-VG headband BCI integrating sound-light stimulation and EEG acquisition.

Main Results:

  • Achieved extremely low electrode-skin impedance (4.22 ± 0.50 kΩ at 10 Hz).
  • Demonstrated high α-rhythm signal-to-noise ratio (5.06-14.22 dB) over 36 days.
  • Showed significant improvements in vigilance, neural activity, heart rate, emotion, and arousal (84-100% moderate-level proportion) with coordinated 40 Hz sound and 10 Hz light stimulation.

Conclusions:

  • Na-VG electrodes offer a novel strategy for long-term, stable, and lightweight BCI applications.
  • The developed wearable BCI system effectively monitors and intervenes in emotional and cognitive states.
  • This technology holds promise for noninvasive monitoring and treatment of neurological and psychological conditions.