What is one of the risks associated with invasive subdural grid electrodes?

Invasive subdural grid electrodes are used in the assessment and treatment of epilepsy, particularly when non-invasive methods are insufficient. One of the primary risks associated with the placement of these electrodes is infection. This is because the procedure involves surgery to place these electrodes directly onto the brain's surface or within the skull, creating an entry point for pathogens. The risk of infection is heightened due to this invasive nature, and it can lead to severe complications if not managed properly.

Infections may manifest as meningitis or localized infections around the electrode site, which can be serious and require further medical intervention, including antibiotics or additional surgical procedures. Ensuring sterile techniques during the procedure and monitoring post-operatively are crucial to minimizing this risk.

While the other options can occur in different contexts related to epilepsy or brain surgery, they are not as directly linked to the invasive nature of subdural grid electrode placement as infection is. Increased seizure frequency might occur due to various factors but is not a direct outcome of the procedure itself. Emotional disturbances and memory loss can be associated with brain surgery, depending on the areas involved, but infection remains a predominant risk in the context of invasive monitoring techniques.