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Cross-Modal Interaction and Integration Through stimulus-specific adaptation in the Thalamic Reticular Nucleus of Rats

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Neuroscience Bulletin 2022年第7期38卷 785-795页

作者： Yumei Gong Yuying Zhai Xinyu Du Peirun Song Haoxuan Xu Qichen Zhang Xiongjie Yu Department of Neurology of the Second Affiliated Hospital of Zhejiang University School of MedicineInterdisciplinary Institute of Neuroscience and TechnologyCollege of Biomedical Engineering and Instrument ScienceZhejiang UniversityHangzhou 310029China Key Laboratory for Biomedical Engineering of Ministry of Education Zhejiang UniversityHangzhou 310027China Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal Zhejiang UniversityHangzhou 310027China

stimulus-specific adaptation(SSA),defined as a decrease in responses to a common stimulus that only partially generalizes to other rare stimuli,is a widespread phenomenon in the brain that is believed to be related to novelty *** cross-modal sensory processing is also a widespread phenomenon,the interaction between the two phenomena is not well *** this study,the thalamic reticular nucleus(TRN),which is regarded as a hub of the attentional system that contains multi-modal neurons,was *** results showed that SSA existed in an interactive oddball stimulation,which mimics stimulation changes from one modality to *** the bimodal integration,SSA to bimodal stimulation was stronger than to visual stimulation alone but similar to auditory stimulation alone,which indicated a limited integrative ***,the present results provide evidence for independent cross-modal processing in bimodal TRN neurons.

关键词： stimulus-specific adaptation Regularity:Novelty detection Thalamic reticular nucleus Crossmodal

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Neural population coding of sound with fidelity and flexibility through stimulus-specific adaptation in medial geniculate body

Neural population coding of sound with fidelity and flexibil...

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中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Xiong-Jie YU,Ju-Fang HE~* Laboratory of Applied Neuroscience and CAS-Hong Kong Joint-Laboratory for Visuo-auditory Integration,Department of Rehabilitation Sciences,The Hong Kong Polytechnic University,Hung Horn,Kowloon,Hong Kong

＜正＞Recent electrophysiological studies in animals,using an oddball stimulus paradigm,have demonstrated that the neurons in AC,TRN,MGB,and IC exhibited an enhanced response to a stimulus that was presented *** phenomenon is termed stimulus-specific adaptation（SSA）,which has been regarded as novelty ***,we analyze the relationships between the frequency response area（FRA） and SSA and the relationship between the sound pressure and SSA,using extracellular recording in the MGB of *** found that MGB neurons showed（1） strong SSA when the pure-tone stimulus in the oddball stimulus paradigm was far deviated from the best frequency（BF） and（2） strong SSA when the sound pressure of tones was *** combination of SSA,tuning curve and sound pressure level would enable MGB neurons to encode the auditory information with higher fidelity and sharpen contrast between different stimuli likely through population coding of different best frequency.

关键词： stimulus-specific adaptation novelty detection coding medial geniculate body

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Across-ear stimulus-specific adaptation in the rat auditory cortex

Across-ear stimulus-specific adaptation in the rat auditory ...

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中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： Israel Nelken Department of Neurobiology Institute of Life SciencesThe Hebrew University of JerusalemJerusalemIsrael

＜正＞The specific adaptation of neuronal responses to a repeated stimulus,which does not fully generalize to other stimuli,is called stimulus-specific adaptation（SSA）.The SSA is thought to be with a mechanism for emphasizing rare and potentially interesting sensory *** in the auditory system from the inferior colliculus to the auditory cortex have been reported to show SSA to stimuli with different *** auditory system processes spatial information of the acoustic *** the present study,we investigated whether neurons in auditory cortex showed the phenomenon of SSA over sound stimuli located in different *** recorded single and multiunit neurons in auditory cortex of anaesthetized *** stimuli were noise bursts or tones presented toward different ears with oddball paradigm.（1）The majority of the cortical neurons showed the preference for the stimulus with novel position.（2）The firing rate of neurons was larger to the stimulus with novel frequency and position than that with the only *** reason that neurons in auditory cortex showed across-ear stimulus-specific adaptation was probably that this adaptation to the different spatial information was segregated from the frequency information,so in the oddball paradigm the response to the deviant stimulus was not affected by the adaptation to the standard stimulus.

关键词： auditory cortex stimulus-specific adaptation spatial information

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Integrative stimulus-specific adaptation of Natural Sounds in the Auditory Cortex of Awake Rat

Integrative Stimulus-Specific Adaptation of Natural Sounds i...

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中国神经科学学会第十二届全国学术会议

作者： Yu-Ying Zhai Yu-Mei Gong Yi Tang Xiong-Jie Yu Zhejiang University Interdisciplinary Institute of Neuroscience and Technology （ZIINT） Qiushi Academy for Advanced Studies Zhejiang University

Recent electrophysiological studies in animals, using an oddball stimulus paradigm with double tones, have demonstrated that the neurons along the auditory pathway from inferior colliculus（IC） to auditory cortex（AC） exhibited an enhanced response to a stimulus that was presented rarely. This phenomenon is termed as stimulusspecific adaptation（SSA）, which has been regarded as novelty detection. However, it is not clear whether SSA is preserved for the natural sounds or whether SSA exists for the spatial locations, moreover, whether SSA integrates different types of cues within a single modality also remains unclear. Here, we addressed those issues with two natural sounds presented at two different locations, using extracellular recording in the AC of awake rat. Our data show that AC neurons exhibited weak SSA for natural sounds but strong SSA for sound locations. We also found that SSA to the double novel stimulus was stronger than single novel stimulus. These findings suggest that detecting unexpected events can benefit from integration of different cues within the same modality.

关键词： stimulus-specific adaptation Auditory Cortex Novelty Detection Natural Sounds

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Toward a neurobiology of auditory object perception： What can we learn from the songbird forebrain？

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Current Zoology 2011年第6期57卷 671-683页

作者： Kai LU, David S. VICARIO Department of Psychology Rutgers University Piscataway NJ 08854 USA

In the acoustic world, no sounds occur entirely in isolation; they always reach the ears in combination with other sounds. How any given sound is discriminated and perceived as an independent auditory object is a challenging question in neu- roscience. Although our knowledge of neural processing in the auditory pathway has expanded over the years, no good theory ex- ists to explain how perception of auditory objects is achieved. A growing body of evidence suggests that the selectivity of neurons in the auditory forebrain is under dynamic modulation, and this plasticity may contribute to auditory object perception. We propose that stimulus-specific adaptation in the auditory forebrain of the songbird （and perhaps in other systems） may play an important role in modulating sensitivity in a way that aids discrimination, and thus can potentially contribute to auditory object perception.

关键词： Songbird Object perception Auditory scene analysis Neural selectivity Plasticity stimulus-specific adaptation

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Auditory thalamus neurons contribute to the coding of surprise

Auditory thalamus neurons contribute to the coding of surpri...

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中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Flora M.ANTUNES Manuel S.MALMIERCA Auditory Neurophysiology Unit Laboratory for the Neurobiology of HearingInstitute of Neuroscience of Castilla y LeonUniversity of SalamancaSpain

＜正＞Objective Neurons in the cat auditory cortex（AC;Ulanovsky et al.,2003） and in the rat inferior culliculus（IC;Perez-Gonzalez et al.,2005,Malmierca et al.,2009）,show a reduced response to a repeated stimulus（deviant）,and briefly resume firing if a novel stimulus（oddball） is presented,i.e.,they show stimulus-specific adaptation（SSA）.To date,no study demonstrated high levels of SSA in the medial geniculate body（MGB） as those found in the AC and *** that the MGB receives its inputs from both the AC and IC it is unclear why MGB does not exhibit similar levels of SSA. Thus,our main goal is to examine if neurons in the MGB show a similar type of SSA as neurons in the AC and in the IC. Methods We recorded single unit extracellular responses,in the MGB of urethane anaesthetized rats,using a similar stimulation paradigm as the one used in the AC and IC *** included the three main subdivisions of the *** Our data demonstrate that a high percentage of neurons in the MGB adapt to the standard stimulus but not to the oddball *** of the neurons in the dorsal and medial subdivisions exhibited extreme levels of SSA,firing almost entirely to the oddball tone,and behaving as surprise *** neurons maintained a high degree of SSA even at very extreme conditions,e.g.,at the combination of a frequency contrast as small as 0.14 octaves and an ISI as long as 2000 *** SSA neurons were mainly onset responders with short latency,but some neurons with tonic and also long latency responses showed high levels of *** We provide evidence for a very rapid and sensitive to the stimuli statistics type of adaptation,that may be mediated by diverse neuronal *** results taken together with those from the AC and the IC,demonstrate the ubiquity of this type of adaptation in neurons from the midbrain level up to the *** hypothesize that SSA may be shaped in a bottom-up process.

关键词： medial geniculate body stimulus-specific adaptation oddball paradigm surprise detectors

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