Dichotic Interaural Intensity Difference (DIID) training was designed to address deficits in dichotic processing. The present review describes the theoretical and physiologic bases for this procedure, highlighting the available efficacy data that are currently available. Additionally, a new approach to the DIID (i.e., DIID II) is presented in which interaural timing deficits are utilized during...

Single and double dichotic digit tests in Malay language were developed and standardized as an initial attempt to incorporate tests of auditory processing within the scope of audiology practice in Malaysia. Normative data under free recall, directed right-ear first, and directed left-ear first listening conditions were determined using 120 Malay children between the ages of 6 and 11 years old w...

The Department of Veterans Affairs (VA) compact disc (VA-CD) Tonal and Speech Materials for Auditory Perceptual Assessment, Disc 1.0 contains three dichotic speech tests. Two of them, namely, dichotic digits and dichotic synthetic sentences, are tasks that are easily and accurately performed by young normal listeners. The third test, dichotic nonsense syllables, is a more difficult task for nor...

INTRODUCTION Evaluation of the objective results in the clinical examination of central auditory disorders requires the use of reliable language tests which provide the means for the estimation of patients' audio-verbal communicative skills. MATERIALS AND METHODS The authors present a new set of more difficult language tests in Polish, including a filtered speech test, numeral and verbal dich...

Objectives: All subjects suspected of Central Auditory Processing Disorder (CAPD) were previously tested by free recall dichotic digits test (DDT). The study objective was normalization and reliability evaluation of two-pair DDT in 750 native Persian subjects aged 8 to 12 years. Materials: A total of 750 subjects were divided into five age groups varying between 8 years and 12 years and 11 mon...

The new compact disc from the Department of Veterans Affairs, Tonal and Speech Materials for Auditory, Perceptual Assessment, Disc 2.0 (1998), contains two lists of randomly interleaved 1-, 2-, and 3-pair dichotic digits. Two experiments are reported, in which the effects of low-pass filtering and inter-digit interval on dichotic digit recognition were investigated in adult listeners with norma...

In a previous study with normal-hearing listeners, we evaluated consonant identification masked by two or more spectrally contiguous bands of noise, with asynchronous square-wave modulation applied to neighboring bands. Speech recognition thresholds were 5.1-8.5 dB better when neighboring bands were presented to different ears (dichotic) than when all bands were presented to one ear (monaural),...

Introduction: Emotional words in comparison with neutral words have different hemispheric specialization. It is assumed that the right hemisphere has a role in processing every kind of emotional word. The objective of the present study was the development of a Persian version of the dichotic emotional word test and evaluate its validation among adult Persian speakers.   Materials and Methods: ...

OBJECTIVES The clinical effects of the simultaneous application of nonlinear frequency compression and dichotic hearing on people with hearing impairments have not been evaluated previously. In this study, the clinical effects of the simultaneous application of these two techniques on the recognition of consonant-vowel-consonant (CVC) words with fricatives were evaluated using normal-hearing su...

OBJECTIVE The objective of the study was to evaluate the effectiveness of binaural dichotic presentation using comb filters with complementary magnitude responses, based on fixed bandwidth and auditory critical bandwidth, in improving speech perception by persons with moderate bilateral sensorineural hearing loss, and to assess its effect on localization of the sound source. DESIGN AND STUDY ...