Neurodegeneration is a field of research that focuses on the progressive loss of structure or function of neurons in the brain and spinal cord. This can lead to a range of neurological conditions such as Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis (ALS). Researchers in this field study the underlying mechanisms of neurodegeneration, including protein misfolding, oxidative stress, inflammation, and genetic factors. They also explore potential treatments and interventions to slow or stop the progression of these debilitating diseases.