Final answer:
The specific feedback condition yielding a 100% success rate in performing the Mendelsohn Maneuver was biofeedback, as stated by Galek et al. (2022).
Step-by-step explanation:
According to the research article by Galek et al. (2022) on the influence of three feedback conditions on performing a swallow motor pattern, the specific feedback condition that yielded a 100% success rate for performance of the Mendelsohn Maneuver (MM) swallow motor pattern was the use of biofeedback. The success of this feedback condition highlights the importance of real-time performance-related information to help patients accurately perform the Mendelsohn Maneuver, which is crucial for those with swallowing difficulties. The study suggests that with proper feedback, the efficacy of swallow rehabilitation exercises can be significantly increased.