light microscope<\/span><\/a>.<\/p>\n\n\n\nThis enabled them to view many synapses on hair cells in a normal ear, as well as the greatly reduced numbers of synapses hair cells following a noise exposure<\/i> that caused only a transient elevation of thresholds.<\/p>\n\n\n\n
They noted that \u201ceach missing synapse represents a missing cochlear nerve that has been disconnected due to retraction of the terminal segment \u2014 it will never reconnect<\/i>.\u201d<\/p>\n\n\n\n
Liberman also indicated that, \u201cIt no longer responds to sound and, within a few months is almost certainly unwarranted,\u201d The researchers are aware of the public health implications of their findings in that all our federal noise exposure guidelines assume that noise exposures cause only transient threshold elevation are benign and now that assumption is certainly outdated.<\/p>\n\n\n\n
While their research was conducted on mammalian ears, mouse, guinea pig and chinchillas, there is every reason to believe that that this same phenomenon exists in humans. The study has led to the possibility that maybe these synapse issues can be reversible, continuing research goes on in their laboratory on this issue.<\/p>\n\n\n\n
Epilog:<\/p>\n\n\n\n
Those of us that see patients each day can testify to this interesting study as we often see patients that have minimal hearing loss on the audiogram, but significant difficulty hearing, or with tinnitus. It is just this type of research that begins to confirm some of the clinical mysteries of hearing, hearing loss and hearing rehabilitation, seen in the clinic each day, and unexplained for decades. <\/i><\/b><\/p>\n\n\n\n
Reprinted with permission from hearinghealthmatters.org. Please visit http:\/\/hearinghealthmatters.org\/ for the original article: Hidden Hearing Loss<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"Each day we all experience sound in the environment. Many of these sounds are low intensity, satisfying, and others are the mundane sounds of life, such as television, radio, household appliances, cars running, traffic, etc. Most of these sounds are at very safe levels and do not cause any danger to hearing. Noise-Induced Hearing Loss We…<\/p>\n","protected":false},"author":1,"featured_media":7951,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"The Hidden Hearing Loss Effect | Heuser Hearing Institute","_seopress_titles_desc":"(502) 584-3573 | Louisville | That there are loud sounds, some brief, other long lasting, that can injure hearing causing Noise Induced Hearing Loss (NIHL).","_seopress_robots_index":"","schema":"","fname":"","lname":"","position":"","credentials":"","placeID":"","no_match":false,"name":"","company":"","review":"","address":"","city":"","state":"","zip":"","lat":"","lng":"","phone1":"","phone2":"","fax":"","mon1":"","mon2":"","tue1":"","tue2":"","wed1":"","wed2":"","thu1":"","thu2":"","fri1":"","fri2":"","sat1":"","sat2":"","sun1":"","sun2":"","hours-note":"","footnotes":""},"categories":[23],"tags":[],"_links":{"self":[{"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/posts\/2439"}],"collection":[{"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/comments?post=2439"}],"version-history":[{"count":0,"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/posts\/2439\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/media\/7951"}],"wp:attachment":[{"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/media?parent=2439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/categories?post=2439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thehearinginstitute.org\/wp-json\/wp\/v2\/tags?post=2439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}