Investigation of Feedback Schedules on Speech Motor Learning in Older Adults.

Background: The principles of motor learning (PML) emerged from studies of limb motor skills in healthy, young adults. The applicability of these principles to speech motor learning, and to older adults, is uncertain.

Aims: The purpose of this study was to examine one PML, feedback frequency, and its effect on retention and generalization of a novel speech and comparable tracing task.

Perceptual ratings of subgroups of ataxic dysarthria.

Background: The speech characteristics of ataxic dysarthria are known to be quite diverse. The varied presentation of this dysarthria challenges researchers and clinicians alike, and brings into question whether it is a single entity. While the possibility of subtypes of ataxic dysarthria has been suggested, the nature of these putative groups remains unclear.