Plastic changes in ipsi-contralateral differences of auditory cortex and inferior colliculus evoked potentials after injury to one ear in the adult guinea pig
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Cited by (101)
Ipsilateral auditory cortex responses to the intact ear after unilateral noise trauma in juvenile rats
2022, Hearing ResearchCitation Excerpt :Most of the previous studies compared central auditory responses after prolonged unilateral hearing loss (Bilecen et al., 2000; Hanss et al., 2009; Khosla et al., 2003; Kitzes, 1984; Kitzes and Semple, 1985; Lee et al., 2017; McAlpine et al., 1997; Nordeen et al., 1983b; Ponton et al., 2001; Reale et al., 1987; Scheffler et al., 1998; Tillein et al., 2016; Vasama et al., 1994). Only a few studies investigated the rapid effects (early-onset effects) and showed that unilateral hearing loss lead to a rapid increase in responsiveness (percent excited loci) of ipsilateral inferior colliculus (IC) neurons (McAlpine et al., 1997; Mossop et al., 2000) and a rapid decrease in response threshold of ipsilateral AC evoked potential to the unoperated ear (Popelar et al., 1994). Consistent with the previous reports, the present study showed that the noise-induced unilateral deafness in juvenile rats resulted in a rapid increase in AC evoked potential amplitude and neuronal discharge rate with decreased threshold in response to the ipsilateral unexposed ear (early-onset effect).
Dynamic Changes in Synaptic Plasticity Genes in Ipsilateral and Contralateral Inferior Colliculus Following Unilateral Noise-induced Hearing Loss
2020, NeuroscienceCitation Excerpt :The initial downregulation at 2-d post-exposure affected many genes in the contralateral IC, whereas only a few decreases were observed in the ipsilateral IC (Fig. 2A, B). This early downregulation in the contralateral IC could be related to the fact that sounds delivered to the ipsilateral ear evoke more robust and shorter latency responses in the contralateral IC (Semple and Kitzes, 1985; Popelar et al., 1994; McAlpine et al., 1997). The contralateral IC also receives many ascending inputs from the ipsilateral cochlear nucleus on the side with the noise-damaged cochlea (Adams, 1979; Nordeen et al., 1983).
In vivo transcranial flavoprotein autofluorescence imaging of tonotopic map reorganization in the mouse auditory cortex with impaired auditory periphery
2019, Hearing ResearchCitation Excerpt :To characterize AC reorganization under anesthesia, we localized the three AC subfields: A1, AAF, and A2. Previous studies have reported that the rodent AC shows remarkably robust changes in response to ototoxic lesions in the periphery (Popelár et al., 1994; Kakigi et al., 2000; Qiu et al., 2000; Allman et al., 2009). However, no previous studies have reported AC-subfield-dependent changes in any detail following ototoxic treatment of the periphery.