| 词汇 | entorhinal |
| 释义 | entorhinal adjective anatomy specializeduk /ˌen.təˈraɪ.nəl/ us /ˌen.t̬əˈraɪ.nəl/ relating to the part of the brain that helps control memory, finding your way from place to place, and your understanding of time: entorhinal cortexThe size of the entorhinal cortex in elderly patients appeared to predict which patients would develop Alzheimer's. Results showed increased activity in the right entorhinal cortex. The earliest pathology occurs in entorhinal cortical input to the hippocampus. Memory for recent events is assisted by the hippocampus, entorhinal cortex, and related structures in the mesial temporal lobe. These changes include atrophy of medial temporal lobe regions, particularly the hippocampus and entorhinal regions. The brain & nervous system abducens nerve abducent nerve accessory nerve alexithymia allism grey matter hemispheric hemispherical hindbrain hippocampus neurogenic neurogenically neuroglia neuroglial neurohormonal reticular formation rhinencephalon rhombencephalon right brain right-brained Examples of entorhinalentorhinal These feed to an array of "entorhinal cells" which combine connections from sensory cells. Perhaps the dorsal cortex of reptiles enlarged and subdivided to form both subicular/entorhinal and neocortical subdivisions in mammals. A second, extrahippocampal, theta oscillator is located in the entorhinal cortex. This involves primary, polysensory, and multimodal information from the entorhinal cortex arriving at the hippocampus via the perforant pathway, which synapses on the granule cells of the dentate gyrus. Polymodal association areas converge directly or indirectly on the entorhinal cortex which in turn forms the principal source of afferents to hippocampus. It is suggested that the dorsal cortex of reptiles expanded in this dorsalizing process to become both entorhinal/subicular cortex and sensory neocortex. This code is sent to the entorhinal cortex and also to the neocortex. Afferent connections of the entorhinal area in the rat as demonstrated by retrograde cell-labeling with horseradish peroxidase. The dentate circuit appears to act as a 'barrier' because it largely shields the effects of entorhinal inputs on neurons of the intrahippocampal regions. There have been three studies that have provided quantitative data about entorhinal cytoarchitecture. First, a large-scale oscillation in the entorhinal-hippocampal network induced by the septum is maintained by phase locking. Rather, these effects are consistent with the dorsal cortex being similar to entorhinal/subicular cortex. The pathway goes directly to the either piriform or primary olfactory cortex and also to the entorhinal cortex, amygdala and olfactory tubercle. It seems likely that olfactory information is relayed through the lateral entorhinal cortex, while the medial entorhinal cortex conveys visual information. It is likely that in the neocortex and also in the entorhinal cortex such a code is stored. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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