ABSTRACT
OBJECTIVE@#To observe waveform difference among cervical vestibular evoked myogenic potentials (cVEMP) elicited with different types of air conducted sound in normal young Chinese subjects.@*METHOD@#Twenty adult volunteers (40 ears) were recruited as research subjects including 10 males and 10 females aged between 19 and 30.500 Hz Tone Burst, 1000 Hz Tone Burst and Click were employed as stimulus for conventional air conducted sound-cVEMP (ACS-cVEMP) examinations in bilateral ears of each subject. The response rate, threshold, P1 latency, N1 latency, P1-N1 latency interval, amplitude and inter-aural asymmetry were recorded and compared among groups.@*RESULT@#The response rate was 97.5% in 500Hz Tone Burst (39/40), 87.5% in 1 000Hz Tone Burst (35/40)and 67.5% in Click (27/40), There were no statistically significant difference between 500Hz Tone Burst and 1000Hz Tone Burst (P > 0.05) but there were statistically significant difference between click and the other groups (P < 0.05). We collected the waveform parameters (the threshold, P1 latency, N1 latency, P1-N1 latency interval, amplitude) which had statistically significant difference between 500 Hz Tone Burst and the other groups (P < 0.05). The inter-aural asymmetrys had no statistically significant differents among groups.@*CONCLUSION@#The response rate and parameter could be affected by different types of air conducted sound in normal young Chinese subjects. 500 Hz Tone Burst was the best stimulus of type what we have known.
Subject(s)
Adult , Female , Humans , Male , Young Adult , Asian People , Neck , Vestibular Evoked Myogenic Potentials , Vestibule, Labyrinth , PhysiologyABSTRACT
OBJECTIVE@#To observe waveform differences among ocular vestibular evoked myogenic potentials (ACS-oVEMP) elicited by different types of air conducted sound in normal young Chinese subjects.@*METHOD@#Twenty-two adult volunteers (44 ears) were recruited as research subjects including 12 males and 10 females aged between 18 and 35. Five hundred Hz tone burst, 125 Hz tone burst and click were employed as stimulus for conventional ACS-oVEMP examinations in bilateral ears of each subject. The response rate, threshold, n I latency, p I latency, n I-p I latency interval, amplitude and inter-aural asymmetry were recorded and compared among groups.@*RESULT@#The response rate was 100% (44/44) in 500 Hz tone burst group, 40.9% (18/44) in 125 Hz tone burst group and 29.6% (12/44) in click group There were statistical significant differences between the 500 Hz tone burst group and the other groups (P < 0.05). Waveform amplitude was the largest in the 500 Hz tone burst group (7.3 +/- 5.5) muV than that in the 125 Hz tone burst group (3.8 +/- 1.5) muV and that in the click group (5.8 +/- 1.3) muV, which had statistically significant differences between the former and the later two groups (P < 0.05). Other waveform parameters presented similar differeces.@*CONCLUSION@#ACS-oVEMP waveforms could be largely affected by different stimulus. 500 Hz tone burst was the best stimulus with highest response rate, biggest amplitude and therefore most easily recognizable waveform in ACS-oVEMP examination.
Subject(s)
Adolescent , Adult , Female , Humans , Male , Young Adult , Acoustic Stimulation , Asian People , Vestibular Evoked Myogenic PotentialsABSTRACT
Nasal supernumerary teeth and additional dental cyst is a common disease in Department of ENT and Department of Stomatology. In reported diseases, patients with a variety of additional teeth appeared in differ ent parts have varied clinical manifestations. Because of no obvious early symptoms, it is more difficult to diagnose, but CT examination in corresponding site can make it easy to diagnose the maxillary sinus and dentigerous cyst diagnosis. Operation is an effective method to cure the disease. Operation is simple, but the defect and tooth cavity after operation is one unavoidable problem for ENT doctor. In relevant literature it can be seen that the disease has a genetic tendency.