- The left hemisphere is specialized for language processing and the right ear has an advantage in language tasks due to stronger contralateral pathways connecting the right ear to the left hemisphere. - The dichotic listening test investigates selective attention in the auditory system by presenting different speech sounds to each ear simultaneously. This reveals the unilateral nature of early speech processing in the dominant left hemisphere for most people. - Two theories explain the right ear advantage observed in dichotic listening tests. The structural theory attributes it to anatomical properties connecting the right ear directly to the left hemisphere, while the attentional theory emphasizes how expectations can prime the language areas in the left hemisphere.

1. Rrrrrrr
-Left hemisphere is specialized in linguistic processing and
contralateral pathways are stronger thus Right Ear has an
advantage in Language processing over left ear.
Formorethanacenturyithasbeenheldthatlanguage,atsomelevel,is
localizedinoneortheothercerebralhemisphere.Inmostpeoplethis
dominanthemisphereistheleft.(TheRight-EarAdvantageandtheLagEffect RobertA.Weeks’)
- The Dichoticlisteningtest isa psychological testcommonly
used to investigate selectiveattention withinthe auditory
system and isasubtopic of cognitivepsychology and neuroscience.
Forthepastdecadeorsotheuseofdichoticspeechperception
experimentshasenabledinvestigatorstolocalizetheunilateralnature
oflanguageatthelevelofspeechperception,i.e.,somelevelofthe
processingofspeechsignalsisundertakenexclusivelybythedominant
hemi-sphere.
Here are two explanations of ear advantages in dichotic listening:
The structural theory
ascribes the advantages to anatomic properties of the auditory system. Kimura (1967)
explains the REA for verbal stimulus by the fact that the right ear is connected to the
Right Ear Advantage in processing Language
Submitted to: Aqsa Haleema Sadia
Submitted by: Anam khan 400578

2. language dominant left hemisphere of the brain and the left ear to the right hemisphere
through the contralateral pathways. She claims that the contralateral pathways are more
preponderant than the ipsilateral pathways which constitute the link between the ear and
the hemisphere on the same side.
The Attentional theory
also maintains that the basis of the laterality effect is lateralized cortical functions, but
emphasizes the influence of attention in priming a particular hemisphere. An expectation
of verbal stimuli, for instance, serves to prime the language dominant hemisphere and
make it extra sensitive to stimuli
Two phenomena havebeenisolated inthe dichoticspeech
situation.
The firstistheright-earadvantage, i.e.,theright-earinputis
correctly identifiedwithahigherprobabilitythantheleft-earinput.
This advantageismaximumwhenstimulus
presentations are simultaneous and declines as inputsare
temporally staggered.
Informationreceivedintherightearistransferreddirectly
tothelanguagedominatedlefthemisphere.Thisdoesnot
meantheleftear cannot understand speech; thetwo hemispheres
docommunicatewitheachother. https://the-gist.org/2011/03/talk-to-the-right-
because-the-left-isn%E2%80%99t-listening/)
Lefthemisphere languagedominance, whichis responsible for
producing therightear advantage,ispresentinabout 90%of
people.