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Robotics in Neurorehabilitation: Beyond the Hype—Understanding What It Can (and Cannot) Do

Dr. Rishabh Pathak
Over the past decade, robotic neurorehabilitation has become one of the most discussed innovations in neurological recovery. Robotic gait trainers, upper-limb rehabilitation systems, exoskeletons, and AI-assisted rehabilitation devices are increasingly being adopted by hospitals and rehabilitation centres worldwide. However, an important question remains: Are robots the future of neurorehabilitation—or are they simply another tool in the rehabilitation toolbox? As clinicians and researchers, we must move beyond marketing claims and focus on scientific evidence, patient selection, and clinical reasoning. What is Robotic Neurorehabilitation? Robotic neurorehabilitation involves the use of electromechanical devices that assist, guide, resist, or augment movement during therapy. These technologies include: • Robotic gait trainers • Wearable exoskeletons • Upper limb robotic rehabilitation devices • End-effector robotic systems • Sensor-based rehabilitation platforms • AI-assiste...
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Ballistocardiographic

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Dr. Rishabh Pathak

Ballistocardiographic artifacts are another type of mechanical cardiac artifact that can be observed in EEG recordings. 

1.     Ballistocardiographic Artifacts:

o Description: Ballistocardiographic artifacts result from slight movements of the head or body that occur with cardiac contractions, leading to waveform distortions in EEG recordings.

o    Characteristics:

§ Source: Arises from the pulsatile force on the aortic arch due to the redirection of blood flow during cardiac contractions.

§ Appearance: Ballistocardiographic artifacts exhibit waveforms similar to pulse artifacts but are more widespread in distribution.

o    Identification:

§ Location: These artifacts may involve one or a few electrodes if due to electrode lead movement, or a collection of posterior electrodes if due to head movement when the patient is supine.

§  Alteration: Repositioning the head or neck on a pillow can sometimes alter the appearance of ballistocardiographic artifacts in EEG recordings.

o    Differentiation:

§  From Pulse Artifacts: Understanding the distribution and characteristics of ballistocardiographic artifacts helps differentiate them from pulse artifacts in EEG recordings.

§ From Other Artifacts: Recognizing the unique waveform patterns and distribution of ballistocardiographic artifacts aids in distinguishing them from other types of artifacts present in EEG recordings.

Accurate identification and differentiation of ballistocardiographic artifacts in EEG recordings are essential for ensuring the quality and reliability of EEG data for clinical assessments and research purposes. Understanding the distinct features of ballistocardiographic artifacts can help researchers and clinicians interpret EEG recordings accurately and avoid misinterpretations caused by these mechanical cardiac artifacts.

 

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