Related Experiment Video
Updated: Aug 6, 2026

Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
Published on: August 30, 2011
False recognition of incidentally learned pictures and words in primary progressive aphasia
Emily Rogalski1, Diana Blum, Alfred Rademaker
1Cognitive Neurology and Alzheimer's Disease Center, Northwestern University, Chicago, IL, USA. e-rogalski@northwestern.edu
Abstract:
Recognition memory was tested in patients with primary progressive aphasia (PPA), a language based dementia with relative preservation of memory for at least the first 2 years. The goal of the study was two-fold: (1) to compare true and false recognition rates for words versus pictures in patients with PPA and cognitively intact controls and (2) to determine if the semantic relatedness of distracters-to-targets influences recognition memory performance. Overall, performance of PPA patients was worse for words than pictures. PPA patients and healthy elderly controls showed similar recognition rates for studied items. However, the patients had significantly more false alarms than controls, particularly to semantically related items. This suggests that the aphasia in PPA patients contributes to their difficulty in selecting among items within a semantic class.
More Related Videos
Related Concept Videos
Prosopagnosia
Visual Agnosia
Tip-of-the-Tongue Phenomenon
Association Areas of the Cortex
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Interference and Decay
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Implicit Memories
One key aspect of implicit...

