…For example, the electroretinogram records the potential changes that occur in the retina when the eye is stimulated with light. The first potential change that appears in response to light stimulation appears as a negative wave on the cornea side in vertebrates and a positive wave in invertebrates, and is thought to be a collection of receptor potentials of sensory cells. A record of the potential that occurs when the olfactory mucosa is stimulated with an odor is called an electroolfactogram, and a record of the potential that occurs when the antennae of an insect are stimulated with an odor is called an electroantennogram, and they are used to detect the effectiveness of odors, etc. However, since these potential changes are a collection of activities of many types of cells, observations using other methods such as the microelectrode method are required to investigate the activity of specific cells within a sensory organ. … *Some of the terminology that refers to "electroolfactogram" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…例えば網膜電図は目を光刺激したときに網膜に発生する電位変化を記録したもので,光刺激により最初に現れる電位変化は,脊椎動物では角膜側が負,無脊椎動物では正の波として現れ,感覚細胞の受容器電位の集合と考えられている。嗅粘膜をにおいで刺激したときに発生する電位を記録したものは嗅電図,昆虫の触角をにおいで刺激したときに発生する電位を記録したものは触角電図と呼び,においの有効性の検知などのために使われる。しかし,これらの電位変化は多くの種類の細胞の活動の集合であるので,感覚器官内の特定の細胞の活動を調べるためには微小電極法などの別の手段による観察が必要となる。… ※「嗅電図」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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