Disease relevance of Reflex, Acoustic

• Our review of the recent literature, however, failed to identify any publication on the use of ABR and acoustic reflex testing in the pediatric neurofibromatosis population [1].
• Comparisons were made of the ABR latencies of tinnitus (T) and nontinnitus (NT) patient groups balanced for age and gender and matched for acoustic reflex threshold (ART)s, 1000 to 4000 Hz and 4000 Hz auditory thresholds, and normal hearing [2].
• In summary, we found: 1) speech-in-noise results were of some value in those patients with normal hearing and of no value in those patients with hearing loss, 2) the acoustic reflex test gave misleading information in 25% of patients, and 3) the ABR test proved to be the most effective test in separating tumor and non-tumor patients [3].
• The hyperacusis and hearing loss in WS may stem from a deficiency in the acoustic reflex resulting from auditory nerve dysfunction [4].
• Contralateral and ipsilateral acoustic reflex activity, and the Pa component of the AMR, were not observed in barbiturate coma, and reappeared with the emergence of brainstem neurologic signs [5].

Psychiatry related information on Reflex, Acoustic

• Individual differences in efferent activity in medial olivocochlear bundle (MOCB) and acoustic reflex (AR) pathways may account for intersubject variability in ANL and PRN [6].

High impact information on Reflex, Acoustic

• Acoustic reflex abnormalities in cranial-cervical dystonia [7].
• PROCEDURES: Tympanometry and acoustic reflex testing were performed on 27 mixed-breed and purebred dogs under isoflurane anesthesia in a non-sound-attenuated room and 21 Beagles under sedation in a sound-attenuated room [8].
• OBJECTIVE: The sensitivity of acoustic reflex threshold changes for monitoring cisplatin ototoxicity in children was compared with the sensitivity of conventional audiometric tests [9].
• Advanced cases present features of retrocochlear affection with decreasing speech recognition, elevated acoustic reflex thresholds, and increased ABR latency with derangement of potentials [10].
• Observations on the acoustic reflex threshold in institutionalized retarded adults taking mellaril and/or thorazine [11].

Biological context of Reflex, Acoustic

• Effects of xylazine and ketamine on the acoustic reflex and brain stem auditory-evoked response in the cat [12].
• All patients received the full battery of auditory brainstem responses, acoustic reflex thresholds and decay, alternate binaural loudness balance and ENG and caloric testing [13].

Anatomical context of Reflex, Acoustic

• The acoustic reflex (AR) and brain stem auditory-evoked response (BAER) were recorded in adult cats 5 minutes after IM administration of xylazine (1 mg/kg) and after IM administration of ketamine (10 mg/kg) [12].

Associations of Reflex, Acoustic with chemical compounds

• Ipsilateral and contralateral AR were recorded at 10 and 20 dB above acoustic reflex threshold 5 minutes after xylazine administration and 5 and 35 minutes after ketamine administration [12].
• Effects of ethyl alcohol on the acoustic reflex threshold [14].
• Pure-tone Reference Equivalent Threshold Sound Pressure Level (RETSPL) of the ipsilateral stimulus receiver for acoustic reflex measurements on Madsen Electronics type Zodiac 901 impedance audiometer is provided [15].
• We conclude that acoustic reflex may be a new method for determination of benzodiazepine effects in man [16].
• The results show that a significant correlation exists between the serum concentrations of flunitrazepam and acoustic reflex amplitude, latency, Maddox wing readings and subjective sedation [16].

Gene context of Reflex, Acoustic

• However, current findings suggest that ABR and acoustic reflex studies are always indicated in the pediatric NF2 population and are as valid and significant as in adults with NF2 [17].
• The clinical interpretation of acoustic reflex test results in ears with sensorineural impairment should be based on a consideration of three characteristics of the response: the reflex threshold hearing level, the reflex threshold sensation level, and the decay of the reflex [18].
• The presence of acoustic reflex patterns classically associated with stapedial otosclerosis in patients with cochlear otosclerosis leads us to predict that some degree of stapedial fixation is common in many cases of cochlear otosclerosis [19].
• The relationships between properties of the acoustic reflex and temporary threshold shift (TTS) were examined in eight subjects exposed to a 95 dB SPL, 1.0-kHz octave-band noise for 4 h [20].
• The results indicated that MS subjects exhibited response abnormalities including prolonged rise times of the acoustic reflex and prolonged absolute latencies, interwave latencies and interaural latencies, and poor response stability of the ABR [21].

References