Rapid change of tonotopic maps in the human auditory cortex during pitch discrimination

Ozaki, Isamu; Jin, Chun Yu; Suzuki, Yasumi; Baba, Masayuki; Matsunaga, M; Hashimoto, Isao

doi:10.1016/j.clinph.2004.02.011

Cited by 31 publications

(31 citation statements)

References 51 publications

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“…In most studies investigating this phenomenon, task-instructions are used to manipulate the allocation of input attention, that is the way in which the processing of a subset of stimuli or stimulus features is prioritized. Hillyard et al (1973) found that sounds presented in the attended ear elicited higheramplitude N1 waveforms than those presented in the unattended one (but found no P2 effect; see also Rif, Hari, Hämäläinen, & Sams, 1991;Woldorff & Hillyard, 1991;Ozaki, Jin, Suzuki, Baba, Matsunaga, & Hashimoto, 2004). Attention sets can not only be established for different modalities, input channels or moments in time (for a summary, see Lange, 2013) but for task-relevant sound features as well.…”

Section: Attentionmentioning

confidence: 99%

Action-related auditory ERP attenuation: Paradigms and hypotheses

Horváth¹

2015

Brain Research

102

133

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A number studies have shown that the auditory N1 event-related potential (ERP) is attenuated when elicited by self-induced or self-generated sounds. Because N1 is a correlate of auditory feature-and event-detection, it was generally assumed that N1-attenuation reflected the cancellation of auditory re-afference, enabled by the internal forward modeling of the predictable sensory consequences of the given action. Focusing on paradigms utilizing non-speech actions, the present review summarizes recent progress on action-related auditory attenuation. Following a critical analysis of the most widely used, contingent paradigm, two further hypotheses on the possible causes of action-related auditory ERP attenuation are presented. The attention hypothesis suggests that auditory ERP attenuation is brought about by a temporary division of attention between the action and the auditory stimulation. The preactivation hypothesis suggests that the attenuation is caused by the activation of a sensory template during the initiation of the action, which interferes with the incoming stimulation.Although each hypothesis can account for a number of findings, none of them can accommodate the whole spectrum of results. It is suggested that a better understanding of auditory ERP attenuation phenomena could be achieved by systematic investigations of the types of actions, the degree of action-effect contingency, and the temporal characteristics of action-effect contingency representation-buildup and -deactivation.3

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Section: Attentionmentioning

confidence: 99%

Action-related auditory ERP attenuation: Paradigms and hypotheses

Horváth¹

2015

Brain Research

102

133

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“…Future experiments could benefit both from studying medication-naïve populations in the same paradigm as well as from larger sample sizes. Also, attention is implicated in the tonotopic representation of pitch in the auditory cortex (Ozaki et al, 2004). Given the impairments in attention in schizophrenia (Fioravanti et al, 2005), it is possible that our experiment has not adequately controlled for this effect.…”

Section: Discussionmentioning

confidence: 86%

Lack of tonotopic organization of the auditory cortex in schizophrenia

Ragole

Slason

Teale

et al. 2014

Preprint

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Background: Disorganization of tonotopy in the auditory cortex has been described in schizophrenia. Subjects with schizophrenia show little to no spatial organization of responses to different tone frequencies in the auditory cortex. Previous studies have called into question the use of MEG and the M100 response to assess tonotopy. This study seeks to replicate prior results of tonotopic disorganization in schizophrenia compared to healthy controls.

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“…Although one of these studies has recorded from only one cerebral region and the other study from two cerebral regions, we recorded potentials from six separate regions in both cerebral hemispheres and investigated whether these patients may have moderate regional differences. In contrast to the other two studies, we also studied the characteristics of the N100 wave in response to target and non-target stimuli as it has been shown to be important for early attentive processes (Ozaki et al 2004). We did not find a difference in the BD group as compared to the control subjects.…”

Section: Discussionmentioning

confidence: 99%

“…Many different components of the cognitive ERP have been identified including N100, P200, N200, P300 and N400. Most clinical studies have been concerned primarily with the more easily identified N100 and P200 components in response to the non-target tone and report that this is not associated with attention (Aminoff and Eisen 1992) However, a more recent study has shown that P100 is associated with early attentive processes (Ozaki et al 2004). The P300 test is one of the well-known cognitive ERPs.…”

Section: Subjectsmentioning

confidence: 99%