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Wherever human beings live, and however they may organise their affairs, they gather from time to time to sing and dance together, often in a ritual setting. In doing so they synchronise their voices and bodily movements to a shared, repeating interval of time, the musical pulse, beat or tactus. We take this capacity to “entrain” to an evenly paced stimulus (isochrony) so much for granted that it...
We used functional magnetic resonance imaging (fMRI) to identify brain areas involved in auditory rhythm perception. Participants listened to three rhythm sequences that varied in temporal predictability. The most predictable sequence was an isochronous rhythm sequence of a single interval (ISO). The other two sequences had nine intervals with unequal durations. One of these had interval durations...
We investigated the role of the cerebellum in differential aspects of temporal control of rhythmic auditory motor synchronization using positron emission tomography (PET). Subjects tapped with their right index finger to metronome tones at a mean frequency of .8Hz during 5 conditions: (1) an isochronous rhythm condition, (2) random changes in interval durations, and while the duration of rhythmic...
The genetically programmed courtship song of male Drosophila melanogaster has a rhythmic repetitive structure of sound pulses that is a critical component of mate recognition. This study investigates the neuronal basis of courtship song production by using the GAL4 enhancer trap paradigm to drive the expression of UAS G -tetanus toxin (TNT) and UAS G -transformer (tra) in subsets of...
Humans often synchronize movements to the beat, indicating that motor areas may be involved in detecting or generating a beat. The basal ganglia have been shown to be preferentially activated by perception of rhythms with a regular beat (Grahn and Brett, 2007), but their necessity for beat-based rhythm processing has not been proven. Previous research has shown that Parkinson's disease (PD) patients...
The two main characteristics of temporal structuring in music are meter and rhythm. The present experiment investigated the event-related potentials (ERP) of these two structural elements with a focus on differential effects of attended and unattended processing. The stimulus material consisted of an auditory rhythm presented repetitively to subjects in which metrical and rhythmical changes as well...
Previous research suggests that our past experience of rhythmic structure in music results in a tendency for Western listeners to subjectively accent equitonal isochronous sequences. We have shown in an earlier study that the occurrence of a slightly softer tone in the 8th to 11th position of such a sequence evokes a P300 event-related potential (ERP) response of different amplitudes depending on...
Previous studies have indicated that physical movement on either every second or on every third beat of an unaccented auditory rhythm pattern can disambiguate whether it is perceived in duple time as a march or in triple time as a waltz. Here we demonstrate that this disambiguation can also be accomplished by direct galvanic stimulation of the vestibular system. The galvanically induced sensation,...
During the last decades, models of music processing in the brain have mainly discussed the specificity of brain modules involved in processing different musical components. We argue that predictive coding offers an explanatory framework for functional integration in musical processing. Further, we provide empirical evidence for such a network in the analysis of event-related MEG-components to rhythmic...
Feeling the beat of a musical piece is easier for some pieces than others, depending on the underlying metrical structure. The present study sought to determine whether increasing metricality, meaning the amount of information supporting an intended meter, would elicit a corresponding increase in the precision of the temporal encoding of rhythmic sequences. Metricality was varied i) by using the Povel...
Listeners may favour particular rhythms because of their degree of conformity to culture-specific expectations or because of perceptual constraints that are apparent early in development. In two experiments we examined adults' and 6-month-old infants' detection of subtle rhythmic and melodic changes to two sequences of tones, a conventional rhythm that musically untrained adults rated as rhythmically...
In prior work (Corriveau et al., 2007), we showed that children with speech and language impairments (SLI) were significantly less sensitive than controls to two auditory cues to rhythmic timing, amplitude envelope rise time and duration. Here we explore whether rhythmic problems extend to rhythmic motor entrainment. Tapping in synchrony with a beat has been described as the simplest rhythmic act...
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