… cortex Frontotemporal Lobar Degeneration Frontotemporal Dementia amyotrophic lateral sclerosis (ALS) … lobar degeneration (FTLD), which underlies frontotemporal dementia, manifest in very different ways. In addition, they … cortex. Meanwhile in behavioral variant frontotemporal dementia (bvFTD), the most common type of FTLD that is …