This study assessed attentional effects on the right-ear advantage (REA) for a dichoticlistening task that used synthetic-speech syllables. Presenting subjects with monaural tone cues at various intervals prior to dichotic pairs of natural-speech syllables, T. A. Mondor and M. P. Bryden 1991 (The influence of attention on the dichotic REA. Neuropsychologia, 29, 1179-1190) found a reduced REA wi...

Listeners heard a sequence of five tones presented monaurally, and then made a forced-choice judgement about the sequence's contour (i.e., its pattern of upward and downward shifts in pitch between successive tones). The forced-choice method ensured that contoured judgements were independent of absolute-pitch an interval cues. Performance was better for sequences presented to the left ear (righ...

The mammalian cochlea receives feedback from the brainstem medial olivocochlear (MOC) efferents, whose putative 'antimasking' function is to adjust cochlear amplification and enhance peripheral signal detection in adverse listening environments. Human studies have been inconsistent in demonstrating a clear connection between this corticofugal system and behavioral speech-in-noise (SIN) listenin...

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...

All major mental functions including language, spatial and emotional processing are lateralized but how strongly and to which hemisphere is subject to inter- and intraindividual variation. Relatively little, however, is known about how the degree and direction of lateralization affect how well the functions are carried out, i.e., how lateralization and task performance are related. The present ...

Rural enrollment in Medicare Advantage (MA) and other prepaid plans grew by 15% from December 2008 to December 2009, faster than the 10% national growth rate. Preferred provider organization (PPO) plans drove the increased enrollment in MA plans in rural areas in 2009, while private fee-for-service (PFFS) plans continued to dominate the market with over 50% of enrollment. This landscape could c...

The Affordable Care Act has altered payment policy for private Medicare Advantage (MA) plans, with the goal of lowering costs closer to the level in traditional Medicare. Using newly available information on 2009 MA plan costs, this analysis com­pares plans' estimates of per capita costs for providing Parts A and B benefits to their enrollees, on a risk-adjusted basis, against what government d...

In a reversal of recent trends, private fee-for-service (PFFS) enrollment fell dramatically in rural areas in early 2010. As a result, Medicare Advantage (MA) enrollment in rural areas (excluding other prepaid plans) fell slightly in early 2010 for the first time in years. The dramatic drop in PFFS enrollment was offset by increases in enrollment in preferred provider organization (PPO) and hea...

The costs of providing benefits to enrollees in private Medicare Advantage (MA) plans are slightly less, on average, than what traditional Medicare spends per beneficiary in the same county. However, MA plans that are able to keep their costs comparatively low are concen­trated in a fairly small number of U.S. counties. In the 25 counties where the cost differences between MA plans and traditio...

The Medicare Advantage (MA) program offers beneficiaries a choice of private health plans as alternatives to the traditional fee-for-service Medicare program. MA plans potentially provide additional value, but as plan choices have proliferated, consumers contemplating their options have had difficulty understanding how they differ. Through "standardization" more consistent types of information ...