Article Boston naming test Frontotemporal dementia Montreal cognitive assessment Progressive Supranuclear Saccadic Impairment Scale Revised Aphasia Quotient Unified Huntington Disease Rating Scale Western aphasia battery adult aged aphasia apraxia of speech biological marker clinical article degenerative disease diagnostic imaging disease duration disease severity electroencephalography electroencephalography (EEG) experimental behavioral test female grammar human language ability language test male neurologic disease assessment neurologic examination northwestern anagram test