What issue might arise from poor electrode contact during recordings?

Poor electrode contact during recordings can lead to the appearance of artifacts. Artifacts are disturbances or inaccuracies in the recorded signal that do not originate from the physiological activity being measured. When electrodes are not in optimal contact with the skin, the electrical impedance at the interface may become inconsistent. This can cause variations in the measured signal, resulting in spikes or fluctuations that do not reflect true biological activity.

In contrast, enhanced signal clarity and increased signal strength generally arise from good electrode contact, where signals are more accurately captured without interference. Temperature fluctuations could affect the recordings in different contexts, but they are not directly linked to electrode contact. Therefore, the main issue associated with poor contact is the generation of artifacts that compromise the integrity and accuracy of the recordings.