Biomedical subjects
Publications and source records attributed to T K Grönfors.
Automatic peak detection of auditory brainstem responses is a multistage process. The main task is the detection of the pedestal peak, which is a broad peak filtered out from the auditory brainstem signal. Special validation stages have been used to determine whether a real response is present, and if so, peak V is detected. The system reaches 90% accuracy with random clinical material.
Auditory brainstem responses are very short events. Therefore, their signal processing has to be executed really carefully. Their latency and amplitude parameters, which are employed to indicate pathological changes, are especially sensitive to digital filtering. Consequently, we have studied appropriate nonrecursive and recursive filters for signals of auditory brainstem responses. Our results seem to refer to rather similar effects of both nonrecursive and recursive filters on the parameters of auditory brainstem responses.