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  • Title: Influence of stimulus polarity on far-field auditory-evoked electrical responses in the chick.
    Author: Brown-Borg HM, Beck MM, Jones TA.
    Journal: J Aud Res; 1986 Oct; 26(4):255-60. PubMed ID: 3436924.
    Abstract:
    The effects of inverting click phase on far-field peripheral and brainstem auditory-evoked responses (PBARs) were examined in 8 White Leghorn chicks of age 3 wks. Significant latency differences occurred in all major positive peaks (Pla, P2a peripheral; P3a central) in response to rarefaction vs condensation clicks of equal intensity, with condensation clicks producing the shortest latencies (latency differences: Pla = 0.374, P2a = 0.372 and P3a = 0.352 msec, p less than .001). The mean latency shift corresponds to an equivalent sine wave frequency of approximately 1360 c/s, a value close to the spectral peak energy of the click. No differences in interpeak latency values were found nor any significant amplitude effects.
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