väliselektroode

Väliselektrood refers to an external electrode used in various scientific and medical applications. These electrodes are designed to make contact with the external environment or a body surface to record electrical signals or deliver electrical stimuli.

In electrophysiology, väliselektroodid are commonly employed to measure the electrical activity of nerve or muscle cells without penetrating the tissue. Techniques like electroencephalography (EEG) and electrocardiography (ECG) utilize surface electrodes placed on the scalp and skin, respectively, to capture brain and heart electrical potentials. Similarly, electromyography (EMG) can use surface electrodes to assess muscle electrical activity.

Beyond biological applications, väliselektroodid can also be found in areas such as electrochemistry and materials science. Here, they might be used to facilitate or monitor chemical reactions occurring at an interface or to measure properties of conductive materials. The specific design and material of a väliselektrood are determined by its intended purpose, influencing factors like conductivity, biocompatibility, and signal-to-noise ratio. Proper placement and secure contact are crucial for obtaining accurate and reliable measurements or effective stimulation.