The human face is a highly coordinated system of muscles that enables expression, communication, and essential protective reflexes. Among these, the orbicularis oculi and orbicularis oris—collectively referred to as the orbicularis muscles—play a central role. These circular muscles are responsible for eyelid closure and lip movement, respectively, and are critical for functions such as blinking, speech articulation, and food intake. What makes these muscles clinically significant is their exclusive innervation by the facial nerve (cranial nerve VII). Any disruption in this nerve’s function directly impacts orbicularis muscle performance, making them key indicator in neurological and neuromuscular assessments. Electromyography (EMG) offers...
Electroencephalography (EEG) is one of the most sensitive diagnostic tools in modern neurology. By capturing the brain’s electrical activity at the microvolt level, EEG helps clinicians diagnose epilepsy, sleep disorders, encephalopathies, brain injuries, and a wide range of neurological conditions. However, the accuracy of an EEG recording does not depend solely on electrode placement or clinical expertise—it also relies heavily on the quality of signal digitisation inside the EEG system. One of the most critical components responsible for this digitisation is the Analog-to-Digital (A/D) converter. In recent years, 24-bit A/D converters have become the gold standard in high-quality EEG systems....
Visual perception is one of the most complex functions of the human brain. Every moment, millions of electrical signals travel from the eyes through the optic nerves to different regions of the brain, enabling us to recognise faces, read text, detect motion, and understand our environment. When this electrical “highway” experiences a disruption—due to disease, inflammation, compression, or injury—the effects can be profound. Visual Evoked Potential (VEP) is one of the most reliable and non-invasive tests used to measure the functional integrity of the visual pathway. Unlike imaging modalities such as CT or MRI that show structural abnormalities, VEP evaluates...
In a world where healthcare delivery is increasingly challenged by distance, population density, and accessibility, mobile and telemonitoring technologies are redefining what it means to receive care. From rural communities to emergency response vehicles, the ability to monitor and manage patients remotely has evolved from a convenience into a necessity. At the heart of this transformation lies a powerful combination of portable medical technology and real-time data connectivity—a space where Indian innovation is making a global mark. Among the companies leading this change, Clarity Medical stands out for its commitment to developing portable, affordable, and intelligent medical solutions such as...
Sleep apnea is a condition that has long gone underdiagnosed. Millions of people struggle with disrupted sleep, chronic fatigue, and serious health risks, yet the underlying cause often remains hidden. Traditionally, diagnosing sleep apnea requires overnight polysomnography (PSG) in a sleep laboratory—a process that is expensive, time-consuming, and inconvenient for patients. But a shift is happening in respiratory diagnostics. EtCO₂ (End-Tidal Carbon Dioxide) monitoring, once reserved for anaesthesia and critical care, is now emerging as a practical and non-invasive screening tool for conditions like sleep apnea. With modern portable monitors integrating EtCO₂ sensors, early detection of breathing irregularities is becoming...
Electromyography (EMG) and nerve conduction studies (NCS) are indispensable tools in modern neurodiagnostics. They help clinicians evaluate the electrical activity of muscles and the integrity of peripheral nerves, playing a central role in diagnosing neuropathies, myopathies, and neuromuscular junction disorders. Yet, despite the sophistication of modern EMG devices, clinical practice often focuses narrowly on basic motor and sensory conduction studies and routine needle EMG. This leaves out several advanced tests that an EMG device can perform—tests that are crucial for early detection, accurate differential diagnosis, and improved patient outcomes. Neglecting these tests can lead to misdiagnosis, delayed treatment, or unnecessary...
