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  1. NTU Theses and Dissertations Repository
  2. 生命科學院
  3. 動物學研究所
請用此 Handle URI 來引用此文件: http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/65237
完整後設資料紀錄
DC 欄位值語言
dc.contributor.advisor嚴震東(Chen-Tung Yen)
dc.contributor.authorChih-Yu Yangen
dc.contributor.author楊智羽zh_TW
dc.date.accessioned2021-06-16T23:31:52Z-
dc.date.available2015-08-01
dc.date.copyright2012-08-01
dc.date.issued2012
dc.date.submitted2012-07-29
dc.identifier.citationReference
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dc.identifier.urihttp://tdr.lib.ntu.edu.tw/jspui/handle/123456789/65237-
dc.description.abstract大鼠視丘腹尾外側核(VPL)主要接收來自於mediolemniscus (ML)和脊髓丘腦束(STT tract)的訊息並將體感覺忠實的傳遞至大腦體感覺皮質區。之前研究已在麻醉下的動物(大鼠,貓和猴子)中分辨出低閾值機械性受體(LTM)、廣動力型神經元(WDR)和疼痛傳導特定型神經元(NS)。然而痛覺只有在清醒的狀態下才可以被辨別的,因此,本篇研究的主要目的在比較這些在麻醉下所定義出的VPL神經元在清醒時對於觸覺及痛覺刺激的反應為何。此實驗經由長期記錄單一神經元(SU)的方法並使用不同強度的機械性von Frey filaments和雷射熱痛刺激,在不同的腦狀態下去測試同一神經元的反應。SR slope結果顯示,VPL中的神經元在麻醉下具有顯著性較差的反應。除此之外,LTM,WDR和NS神經元在清醒的狀態下會有功能性相似的表現。因此,我們認為在麻醉的狀態下,視丘對於感覺訊息的傳遞會有所改變。zh_TW
dc.description.abstractVentroposterior lateral nucleus (VPL) is a first-order thalamic nucleus which receives somatosensory information from mediolemniscus and spinothalamic tract, and relays inputs of the body to somatosensory cortex. Previous studies identify low-threshold (LTM), wide-dynamic range (WDR), and noxious-specific (NS) neurons in anesthetized rat, cat and monkey. However, pain sensation can only be discriminated under conscious state. Thus, the main purpose of the present study was to compare the somatosensory response of the different types of VPL neurons under conscious and anesthetized states in the rat. VPL single-unit activities were recorded by chronically implanted microwire electrodes. Mechanical von Frey filaments and laser heat stimulations applied to the paws were used for quantitative stimulations. Stimulus-response slope results showed that VPL neurons had significantly lower response under anesthetized state. In addition, LTM, WDR and NS neurons became functionally alike neurons in the conscious state. Therefore, we concluded that anesthesia altered sensory transmission in the thalamus.en
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Previous issue date: 2012
en
dc.description.tableofcontentsTable of Content
INTRODUCTION 1
SENSORY RESPONDING PROPERTIES OF PRIMARY AFFERENTS 1
SENSORY RESPONDING PROPERTIES OF DORSAL HORN NEURONS 3
FUNCTIONAL ROLE OF THE VPL 5
THERMOSENSITIVITY OF SPINOTHALAMIC NEURONS 6
ANESTHETIC EFFECT OF ISOFLURANE 7
PURPOSE OF THE STUDY 8
GOAL OF THE STUDY 9
MATERIAL AND METHOD 11
ANIMALS 11
ELECTRODES PREPARATION 11
CHRONIC ELECTRODES IMPLANT SURGERY 12
EXPERIMENT 1. EVOKED-RESPONSE OF SAME NEURONS UNDER ANESTHESIA IN THE CONSCIOUS STATE 13
EXTRACELLULAR SINGLE-UNIT RECORDING 13
GENERAL 13
PROCEDURES OF MECHANICAL STIMULI 14
PROCEDURES OF LASER HEAT STIMULI 14
EXPERIMENT 2. RECORDING AND CLASSIFY NEURON TYPES IN THE ANESTHETIZED STATE 15
GENERAL 15
PROCEDURES OF MECHANICAL STIMULI 15
PROCEDURES OF THERMAL STIMULI 15
DATA ACQUISITION AND ANALYSIS 16
HISTOLOGY 18
RESULT 19
MECHANICAL CLASSIFICATION OF VPL NEURONS 19
MECHANICAL CODING ABILITIES UNDER ANESTHETIZED STATE 20
MECHANICAL CODING ABILITIES UNDER CONSCIOUS AND ANESTHETIZED STATE 22
MECHANICAL CODING ABILITIES UNDER CONSCIOUS STATE 24
LASER HEAT RESPONSIBILITY OF VPL NEURONS 25
LASER HEAT RESPONSIBILITY OF VPL NEURONS UNDER ANESTHETIZED AND CONSCIOUS STATE 26
LASER HEAT RESPONSIBILITY OF VPL NEURONS UNDER CONSCIOUS STATE 27
RECEPTIVE FIELD EXPANSION UNDER THE CONSCIOUS STATE 28
HISTOLOGY 29
DISCUSSION 30
MECHANICAL-EVOKED RESPONSES 30
LASER HEAT EVOKED RESPONSES 33
EQUALLY DISTRIBUTION OF LH SENSITIVE AFFERENTS AMONG THE VPL NEURONS 36
CONCLUSION AND PERSPECTIVES 38
REFERENCE 40
TABLES AND FIGURES 47
dc.language.isoen
dc.title大鼠視丘腹尾外側核神經元在清醒與麻醉下對於觸覺與痛刺激反應之比較zh_TW
dc.titleComparison Response to Tactile and Noxious Stimulation of the Ventral Posterolateral Nuclei under Anesthetized and Conscious State of Ratsen
dc.typeThesis
dc.date.schoolyear100-2
dc.description.degree碩士
dc.contributor.oralexamcommittee蕭富仁(Fu-Zen Shaw),徐百川(Bai-Chuang Shyu),蔡孟利(Meng-Li Tsai),謝松蒼(Sung-Tsang Hsieh)
dc.subject.keyword大鼠,視丘腹尾外側核,痛覺,單一神經元,zh_TW
dc.subject.keywordRat,Ventroposterior lateral nucleus (VPL),nociception,single unit,en
dc.relation.page82
dc.rights.note有償授權
dc.date.accepted2012-07-30
dc.contributor.author-college生命科學院zh_TW
dc.contributor.author-dept動物學研究所zh_TW
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