dementia of the alzheimer type (ad) can affect emotional judgments of facial expression and prosody. Spared emotional judgments of music have been observed in early AD (Gagnon, Peretz, & Fülöp, 2009). The AD case study of Cuddy and Duffin (2005) showed relatively spared perception and memory for music. Through the single case study of MD, we again address the question of whether early AD might leave these abilities intact. The first experiment examined her musical emotional judgments in relation to mode and tempo. Overall results replicated the finding of a preserved response to changes in these structural properties. In a second experiment, we examined MD's recognition of musical and facial emotional expressions. She demonstrated a deficit only for the recognition of the facial expression of anger. Her performance adds to other empirical demonstrations that in early AD music perception and memory, as well as musical emotional judgments, may be relatively preserved.
RECENTLY, WE POINTED OUT THAT A SMALL number of individuals fail to acquire basic musical abilities, and that these deficiencies might have neuronal and genetic underpinnings. Such a musical disorder is now termed "congenital amusia," an umbrella term for lifelong musical disabilities that cannot be attributed to mental retardation, deafness, or lack of exposure. Congenital amusia is a condition that is estimated to affect 4% of the general population. Despite this relatively high prevalence, cases of congenital amusia have been difficult to identify.We present here a novel on-line test that can be used to identify such cases in 15 minutes, provided that the cohort of the participant is taken into account. The results also confirm that congenital amusia is typically expressed by a deficit in perceiving musical pitch but not musical time.