Abstract：
:It has been hypothesized that the steady-state response to a periodic sequence of clicks can be modeled as the superposition of responses to single clicks. Here, this hypothesis is challenged by presenting an extra click halfway between two consecutive clicks of a regular series, while measuring the auditory evoked field. After a solitary click at time zero, the click series sounded from 100 to 900 ms, with the extra click presented around 500 ms. The silent period between two stimulus sequences was 310-390 ms (uniformly distributed) so that one stimulation cycle lasted, on average, 1250 ms. Five different click rates between 20 and 60 Hz were examined. The disturbance caused by the extra click was revealed by subtracting the estimated steady-state response from the joint response to the click series and the extra click. The early peaks of the single-click response effectively coincide with same-polarity peaks of the 20-Hz steady-state response. Nevertheless, prediction of the latter from the former proved impossible. However, the 40-Hz steady-state response can be predicted reasonably well from the 20-Hz steady-state response. Somewhat surprisingly, the amplitude of the evoked response to the extra click grew when the click rate of the train was increased from 20 to 30 Hz; the opposite effect would have been expected from research on adaptation. The smaller amplitude at lower click rates might be explained by forward suppression. In this case, the apparent escape from suppression at higher rates might indicate that the clicks belonging to the periodic train are being integrated into an auditory stream, possibly in much the same manner as in classical stream segregation experiments.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Lütkenhöner B,Patterson RDdoi
10.1007/s00221-015-4260-6subject
Has Abstractpub_date
2015-06-01 00:00:00pages
1875-92issue
6eissn
0014-4819issn
1432-1106journal_volume
233pub_type
杂志文章abstract：:When humans pursue motion stimuli composed of alternating constant velocity segments of randomised duration (RD), they nevertheless initiate anticipatory eye deceleration before stimulus direction changes at a pre-programmed time based on averaging prior stimulus timing. We investigated, in both the time and frequency...
journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
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journal_title：Experimental brain research
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doi：10.1007/BF00230932
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journal_title：Experimental brain research
pub_type： 杂志文章
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231260
更新日期：1990-01-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
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doi：10.1007/s00221-013-3631-0
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pub_type： 杂志文章,评审
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00231170
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更新日期：2010-05-01 00:00:00
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pub_type： 杂志文章
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journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章
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journal_title：Experimental brain research
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