How do subcortical dementias differ from cortical?
- Subcortical dementias tend to respond better to cueing (e.g., categorical cues or multiple choice) during memory testing, as the deficit tends to be one of retrieval rather than encoding.
- They also tend to be more associated with psychomotor slowing, depression, and more executive dysfunction.
- They tend to be more associated with early motor abnormalities, such as paratonic rigidity/gegenhalten, as opposed to cortical dementias in which motor abnormalities tend to be a later phenomenon.