Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants

Haywood, Nicholas R.; Roberts, Brian

doi:10.1121/1.4799220

Cited by 2 publications

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“…Given that the nine tones preceding the deviant were unchanged relative to the standard-inducer case, the substantial reduction in segregation observed could not be attributed simply to a failure of the deviant tone to contribute to the build-up occurring during the induction sequence. These findings were interpreted as evidence that a single change to an ongoing sequence can actively reset the build-up of stream segregation (see also Haywood, 2009; Haywood & Roberts 2011a). In addition, Haywood and Roberts (2010) found that relatively small changes in frequency could trigger resetting, and so concluded that resetting does not require a change in magnitude likely to be perceived as a new source.…”

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confidence: 98%

Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants.

Haywood¹,

Roberts²

2013

Journal of Experimental Psychology: Human Perception and Perfor

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A sequence of constant-frequency tones can promote streaming in a subsequent sequence of alternating-frequency tones, but why this effect occurs is not fully understood and its time course has not been investigated. Experiment 1 used a 2.0-s-long constant-frequency inducer (10 repetitions of a low-frequency pure tone) to promote segregation in a subsequent, 1.2-s test sequence of alternating low- and high-frequency tones. Replacing the final inducer tone with silence substantially reduced reported test-sequence segregation. This reduction did not occur when either the 4th or 7th inducer was replaced with silence. This suggests that a change at the induction/test-sequence boundary actively resets build-up, rather than less segregation occurring simply because fewer inducer tones were presented. Furthermore, Experiment 2 found that a constant-frequency inducer produced its maximum segregation-promoting effect after only three tones--this contrasts with the more gradual build-up typically observed for alternating-frequency sequences. Experiment 3 required listeners to judge continuously the grouping of 20-s test sequences. Constant-frequency inducers were considerably more effective at promoting segregation than alternating ones; this difference persisted for ∼10 s. In addition, resetting arising from a single deviant (longer tone) was associated only with constant-frequency inducers. Overall, the results suggest that constant-frequency inducers promote segregation by capturing one subset of test-sequence tones into an ongoing, preestablished stream, and that a deviant tone may reduce segregation by disrupting this capture. These findings offer new insight into the dynamics of stream segregation, and have implications for the neural basis of streaming and the role of attention in stream formation.

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confidence: 98%

Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants.

Haywood¹,

Roberts²

2013

Journal of Experimental Psychology: Human Perception and Perfor

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“…This is true even when the acoustic properties of a tone sequence remain unchanged, for example, in an alternating low- (L) and high- (H) frequency tone sequence (Anstis & Saida, 1985; Bregman, 1978; Rogers & Bregman, 1998; see also van Noorden, 1975). A closely related effect has been observed where an “induction” sequence comprising same-frequency tones (e.g., L–L–L–…, where – represents a brief silence) can promote stream segregation in a subsequent “test” sequence comprising both H and L tones (Haywood, 2009; Haywood & Roberts, 2010; Roberts, Glasberg, & Moore 2008; Rogers & Bregman, 1993). For such an arrangement, the same-frequency induction sequence may act to promote stream segregation by capturing one subset of the test-sequence tones into an ongoing, pre-established stream (for the current example, this refers to the L tones), from which the second subset of tones is heard to be segregated (Rogers & Bregman, 1993).…”

Section: Methodsmentioning

confidence: 86%

“…Listeners were drawn from an undergraduate and postgraduate population and had a mean age of 26.4 years ( SD = 7.3, range = 19–41 years). Five of the listeners had previously contributed to one or more experiments concerning the stream segregation of pure-tone stimuli and one listener had received extensive musical training (see Haywood, 2009). 1 All listeners reported normal hearing and were screened during the training session (see Procedure section).…”

Section: Methodsmentioning

confidence: 99%

“…Twelve listeners contributed to the main experiment, all of whom reported normal hearing (mean age = 23.2 years, SD = 4.3, range = 18–31 years). Ten of these listeners had previously completed Experiment 1, and three listeners had other experience of stream segregation experiments (Haywood, 2009). 3 Except where stated, the same general method and procedure were used as in Experiment 1.…”

Section: Methodsmentioning

confidence: 99%

“…No one failed the training session. Three of the listeners had previously taken part in Experiments 1 and 2 and also had other experience of stream segregation experiments (Haywood, 2009). 4 Another listener had taken part in Experiment 1 but not in any other streaming experiments.…”

Section: Methodsmentioning

confidence: 99%

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Sequential grouping of pure-tone percepts evoked by the segregation of components from a complex tone.

Haywood¹,

Roberts²

2011

Journal of Experimental Psychology: Human Perception and Perfor

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A sudden change applied to a single component can cause its segregation from an ongoing complex tone as a pure-tone-like percept. Three experiments examined whether such pure-tone-like percepts are organized into streams by extending the research of Bregman and Rudnicky (1975). Those authors found that listeners struggled to identify the presentation order of 2 pure-tone targets of different frequency when they were flanked by 2 lower frequency "distractors." Adding a series of matched-frequency "captor" tones, however, improved performance by pulling the distractors into a separate stream from the targets. In the current study, sequences of discrete pure tones were substituted by sequences of brief changes applied to an otherwise constant 1.2-s complex tone. Pure-tone-like percepts were evoked by applying 6-dB increments to individual components of a complex comprising harmonics 1-7 of 300 Hz (Experiment 1) or 0.5-ms changes in interaural time difference to individual components of a log-spaced complex (range 160-905 Hz; Experiment 2). Results were consistent with the earlier study, providing clear evidence that pure-tone-like percepts are organized into streams. Experiment 3 adapted Experiment 1 by presenting a global amplitude increment either synchronous with, or just after, the last captor prior to the 1st distractor. In the former case, for which there was no pure-tone-like percept corresponding to that captor, the captor sequence did not aid performance to the same extent as previously. It is concluded that this change to the captor-tone stream partially resets the stream-formation process, and so the distractors and targets became likely to integrate once more.

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Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants

Cited by 2 publications

References 0 publications

Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants.

Build-up of auditory stream segregation induced by tone sequences of constant or alternating frequency and the resetting effects of single deviants.

Sequential grouping of pure-tone percepts evoked by the segregation of components from a complex tone.

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