Participação do cerebelo no processamento auditivo

Sens, Patrícia Maria; Almeida, Clemente Isnard Ribeiro de

doi:10.1590/s0034-72992007000200019

Cited by 12 publications

(5 citation statements)

References 29 publications

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“…These studies pointed to a threshold reduction in cerebellar responses with the destruction of the inner ears of cats, demonstrating evidence of a pathway linking the cochlea to the cerebellum (38). Other authors have suggested, using evoked potential methods, that this peripheral afferent pathway tracks from the cochlear nucleus to the cerebellum (39). Animal studies also propose that cerebellar central afferent auditory pathways involve the pontine nucleus, inferior colliculus and auditory cortex (40), while the efferent auditory pathway track through the inferior colliculus, medial geniculate body and auditory cortex (41).…”

Section: Discussionmentioning

confidence: 93%

Central Processing in Tinnitus: fMRI Study Outlining Patterns of Activation Using an Auditory Discrimination Task in Normal Versus Tinnitus Patients

Zenke¹,

Rahman²,

Guo

et al. 2021

Otology &Amp; Neurotology

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Objective:Elucidate brain activity differences between patients with tinnitus and controls.Study Design:Cross-sectional cohort study.Setting:Outpatient Otolaryngology clinic.Patients:Three cohorts; 8 controls, 12 with subjective idiopathic tinnitus (tinnitus without hearing loss), and 12 with both tinnitus and hearing loss.Intervention:An auditory oddball identification task was performed in fMRI scanner.Main Outcome Measures:Task performance and Tinnitus Handicap Inventory (THI) scores were recorded. Brain activation maps were generated comparing deviant and standard tones as well as at rest. One-way and two-way T-contrasts were generated in addition to multiple regression modeling which identified significant brain regions predicting tinnitus, disease severity, duration, and task performance.Results:Task performance worsened in tinnitus patients with increased auditory workload, in terms of additional hearing loss. THI score and grade correlated with false alarms. The limbic system, heschel's gyrus, angular gyrus and cerebellum have a significant effect on both brain behavior in patients with tinnitus, and predictability of tinnitus and its behavioral implications.Conclusion:Increased auditory workload resulted in poorer task performance. Moreover, it is possible to predict auditory task performance in patients with tinnitus by looking at the activity of specific regions of interest. Heschl's gyrus, angular gyrus, cerebellar, and limbic system activity are important contributors to neurological activity associated with tinnitus. Finally, predictive modeling may influence further research surrounding tinnitus treatment.

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Section: Discussionmentioning

confidence: 93%

Central Processing in Tinnitus: fMRI Study Outlining Patterns of Activation Using an Auditory Discrimination Task in Normal Versus Tinnitus Patients

Zenke¹,

Rahman²,

Guo

et al. 2021

Otology &Amp; Neurotology

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“…The activation of different cerebellar areas leads us to infer about a functional specificity of cerebellar areas, suggesting an analogy with computer functions, in which the cerebellum behaves as a computer which processes specialized data, integrating information from numerous origins and modes 8 . The great difficulty in finding patients with cerebellar lesions only made our study group very restrictive, including individuals with different cerebellar lesion etiologies.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The role of the cerebellum in auditory processing using the SSI test

Sens¹,

Almeida²,

Souza³

et al. 2011

Braz. j. otorhinolaryngol. (Impr.)

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The Synthetic Sentence Identification (SSI) test assesses central auditory pathways by measuring auditory and visual sensitivity and testing selective attention. Cerebellum activation in auditory attention and sensorial activity modulation have already been described. Assessing patients with cerebellar lesions alone using the SSI test can confirm the role of the cerebellum in auditory processing. Aim:To evaluate the role of the cerebellum in auditory processing in individuals with normal hearing and in those with chronic cerebellum lesions, using the SSI test. Materials and Methods:Cross-sectional cohort study. A study group comprising 18 patients with chronic cerebellar lesion and a control group of 20 healthy individuals were assessed. The SSI test was applied in an Ipsilateral Competitive Message (ICM) and Contralateral Competitive Message (CCM) modes. To compare the results between groups, we used the chi-square test for qualitative variables.Results: A statistically significant difference was found between the study and control groups using the ICM mode of the SSI test (p=0.035), but not in the CCM mode (p=0.083). Conclusion:The results on the SSI confirmed cerebellar participation in auditory processing in individuals with chronic cerebellar lesions and in those with normal hearing assessed in this study. Braz J Otorhinolaryngol. 2011;77(5):584-8. ORIGINAL ARTICLE BJORL

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“…Specific regions in the lateral cerebellum in humans, particularly in the left Crus I area, are consistently activated in brain imaging studies involving auditory tasks ranging from passive listening to pure tones or clicks, to various types of active auditory discrimination of intensity, duration, location, pitch, timbre and speech (Petacchi et al, 2005; Callan et al, 2007; Sens and de Almeida, 2007; Wilson et al, 2009). Tasks involving temporal processing of auditory stimuli have shown that individuals with lateral cerebellar lesions could not accurately perceive the difference between ‘longer’ and ‘shorter’ acoustic tone bursts (Ivry et al, 1988), and cerebellar involvement in this task was later confirmed in normal individuals in a fMRI study by Mathiak et al (2004).…”

Section: The Cerebellum In Human Auditory Processingmentioning

confidence: 99%

The Contribution of Brainstem and Cerebellar Pathways to Auditory Recognition

McLachlan

Wilson

2017

Front. Psychol.

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The cerebellum has been known to play an important role in motor functions for many years. More recently its role has been expanded to include a range of cognitive and sensory-motor processes, and substantial neuroimaging and clinical evidence now points to cerebellar involvement in most auditory processing tasks. In particular, an increase in the size of the cerebellum over recent human evolution has been attributed in part to the development of speech. Despite this, the auditory cognition literature has largely overlooked afferent auditory connections to the cerebellum that have been implicated in acoustically conditioned reflexes in animals, and could subserve speech and other auditory processing in humans. This review expands our understanding of auditory processing by incorporating cerebellar pathways into the anatomy and functions of the human auditory system. We reason that plasticity in the cerebellar pathways underpins implicit learning of spectrotemporal information necessary for sound and speech recognition. Once learnt, this information automatically recognizes incoming auditory signals and predicts likely subsequent information based on previous experience. Since sound recognition processes involving the brainstem and cerebellum initiate early in auditory processing, learnt information stored in cerebellar memory templates could then support a range of auditory processing functions such as streaming, habituation, the integration of auditory feature information such as pitch, and the recognition of vocal communications.

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Participação do cerebelo no processamento auditivo

Cited by 12 publications

References 29 publications

Central Processing in Tinnitus: fMRI Study Outlining Patterns of Activation Using an Auditory Discrimination Task in Normal Versus Tinnitus Patients

Central Processing in Tinnitus: fMRI Study Outlining Patterns of Activation Using an Auditory Discrimination Task in Normal Versus Tinnitus Patients

The role of the cerebellum in auditory processing using the SSI test

The Contribution of Brainstem and Cerebellar Pathways to Auditory Recognition

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