1. Harmonic Frequency Lowering: Effects on the Perception of Music Detail and Sound Quality.

    Trends in Hearing 20 (2016) PMID 26834122 PMCID PMC4737978

    A novel algorithm for frequency lowering in music was developed and experimentally tested in hearing-impaired listeners. Harmonic frequency lowering (HFL) combines frequency transposition and frequency compression to preserve the harmonic content of music stimuli. Listeners were asked to make ju...
  2. Deficits in the Mimicry of Facial Expressions in Parkinson's Disease.

    Frontiers in Psychology 7:780 (2016) PMID 27375505 PMCID PMC4894910

    Humans spontaneously mimic the facial expressions of others, facilitating social interaction. This mimicking behavior may be impaired in individuals with Parkinson's disease, for whom the loss of facial movements is a clinical feature. To assess the presence of facial mimicry in patients with Pa...
  3. Dynamic Range Across Music Genres and the Perception of Dynamic Compression in Hearing-Impaired Listeners.

    Trends in Hearing 20 (2016) PMID 26868955 PMCID PMC4753356

    Dynamic range compression serves different purposes in the music and hearing-aid industries. In the music industry, it is used to make music louder and more attractive to normal-hearing listeners. In the hearing-aid industry, it is used to map the variable dynamic range of acoustic signals to th...
  4. Music and Memory in Alzheimer's Disease and The Potential Underlying Mechanisms.

    Journal of Alzheimer's Disease 51(4):949 (2016) PMID 26967216

    With population aging and a projected exponential expansion of persons diagnosed with Alzheimer's disease (AD), the development of treatment and prevention programs has become a fervent area of research and discovery. A growing body of evidence suggests that music exposure can enhance memory and...
  5. Excitability of the motor system: A transcranial magnetic stimulation study on singing and speaking.

    Neuropsychologia 75:525 (2015) PMID 26116909

    The perception of movements is associated with increased activity in the human motor cortex, which in turn may underlie our ability to understand actions, as it may be implicated in the recognition, understanding and imitation of actions. Here, we investigated the involvement and lateralization ...
  6. The role of the extended MNS in emotional and nonemotional judgments of human song.

    Cognitive, Affective & Behavioral Neuroscience 15(1):32 (2015) PMID 25029995

    In the present study, we examined the involvement of the extended mirror neuron system (MNS)-specifically, areas that have a strong functional connection to the core system itself-during emotional and nonemotional judgments about human song. We presented participants with audiovisual recordings ...
  7. Development of the adaptive music perception test.

    Ear and Hearing 36(2):217 (2015) PMID 25350404

    Despite vast amounts of research examining the influence of hearing loss on speech perception, comparatively little is known about its influence on music perception. No standardized test exists to quantify music perception of hearing-impaired (HI) persons in a clinically practical manner. This s...
  8. Compensatory plasticity in the deaf brain: effects on perception of music.

    Brain Sciences 4(4):560 (2014) PMID 25354235 PMCID PMC4279142

    When one sense is unavailable, sensory responsibilities shift and processing of the remaining modalities becomes enhanced to compensate for missing information. This shift, referred to as compensatory plasticity, results in a unique sensory experience for individuals who are deaf, including the ...
  9. The influence of vocal training and acting experience on measures of voice quality and emotional genuineness.

    Frontiers in Psychology 5:156 (2014) PMID 24639659 PMCID PMC3945712

    Vocal training through singing and acting lessons is known to modify acoustic parameters of the voice. While the effects of singing training have been well documented, the role of acting experience on the singing voice remains unclear. In two experiments, we used linear mixed models to examine t...
  10. Spectral information for detection of acoustic time to arrival.

    Attention, Perception & Psychophysics 75(4):738 (2013) PMID 23359354

    The exponential increase of intensity for an approaching sound source provides salient information for a listener to make judgments of time to arrival (TTA). Specifically, a listener will experience a greater rate of increasing intensity for higher than for lower frequencies during a sound sourc...
  11. Feeling voices.

    PLoS ONE 8(1):e53585 (2013) PMID 23341954 PMCID PMC3547010

    Two experiments investigated deaf individuals' ability to discriminate between same-sex talkers based on vibrotactile stimulation alone. Nineteen participants made same/different judgments on pairs of utterances presented to the lower back through voice coils embedded in a conforming chair. Disc...
  12. Predicting musically induced emotions from physiological inputs: linear and neural network models.

    Frontiers in Psychology 4:468 (2013) PMID 23964250 PMCID PMC3737459

    Listening to music often leads to physiological responses. Do these physiological responses contain sufficient information to infer emotion induced in the listener? The current study explores this question by attempting to predict judgments of "felt" emotion from physiological responses alone us...
  13. Vibrotactile discrimination of musical timbre.

    Journal of Experimental Psychology: Human Perce... 38(4):822 (2012) PMID 22708743

    Five experiments investigated the ability to discriminate between musical timbres based on vibrotactile stimulation alone. Participants made same/different judgments on pairs of complex waveforms presented sequentially to the back through voice coils embedded in a conforming chair. Discriminatio...
  14. Audio-visual facilitation of the mu rhythm.

    Experimental Brain Research 218(4):527 (2012) PMID 22427133

    Previous studies demonstrate that perception of action presented audio-visually facilitates greater mirror neuron system (MNS) activity in humans (Kaplan and Iacoboni in Cogn Process 8(2):103-113, 2007) and non-human primates (Keysers et al. in Exp Brain Res 153(4):628-636, 2003) than perception...
  15. Age-related difference in melodic pitch perception is probably mediated by temporal processing: empirical and computational evidence.

    Ear and Hearing 33(2):177 (2012) PMID 22367092

    This study was designed to examine whether age-related differences in melodic pitch perception may be mediated by temporal processing. Temporal models of pitch suggest that performance will decline as the lowest component of a complex tone increases in frequency, regardless of age. In addition, ...
  16. The motor origins of human and avian song structure.

    PNAS 108(37):15510 (2011) PMID 21876156 PMCID PMC3174665

    Human song exhibits great structural diversity, yet certain aspects of melodic shape (how pitch is patterned over time) are widespread. These include a predominance of arch-shaped and descending melodic contours in musical phrases, a tendency for phrase-final notes to be relatively long, and a b...
  17. Ideomotor effects of pitch on continuation tapping.

    Quarterly Journal of Experimental Psychology 64(2):381 (2011) PMID 20694921

    The ideomotor principle predicts that perception will modulate action where overlap exists between perceptual and motor representations of action. This effect is demonstrated with auditory stimuli. Previous perceptual evidence suggests that pitch contour and pitch distance in tone sequences may ...
  18. A comparison of the McGurk effect for spoken and sung syllables.

    Attention, Perception & Psychophysics 72(6):1450 (2010) PMID 20675792

    The importance of visual cues in speech perception is illustrated by the McGurk effect, whereby a speaker's facial movements affect speech perception. The goal of the present study was to evaluate whether the McGurk effect is also observed for sung syllables. Participants heard and saw sung inst...
  19. Facial expressions of singers influence perceived pitch relations.

    Psychonomic Bulletin & Review 17(3):317 (2010) PMID 20551352

    In four experiments, we examined whether facial expressions used while singing carry musical information that can be "read" by viewers. In Experiment 1, participants saw silent video recordings of sung melodic intervals and judged the size of the interval they imagined the performers to be singi...
  20. A new look at retest learning in older adults: learning in the absence of item-specific effects.

    Journals of Gerontology Series B: Psychological... 64(4):470 (2009) PMID 19502572

    We investigated retest learning (i.e., performance improvement through retest practice) in the absence of item-specific effects (i.e., learning through memorizing or becoming familiar with specific items) with older adults. Thirty-one older adults (ages 60-82 years, M = 71.10, SD = 6.27) partici...