PDF(Pubmed)
Abstract：
The perirhinal cortex (PER) supports multimodal object recognition, but how multimodal information of objects is integrated within the PER remains unknown. Here, we recorded single units within the PER while rats performed a PER-dependent multimodal object-recognition task. In this task, audiovisual cues were presented simultaneously (multimodally) or separately (unimodally). We identified 2 types of object-selective neurons in the PER: crossmodal cells, showing constant firing patterns for an object irrespective of its modality, and unimodal cells, showing a preference for a specific modality. Unimodal cells further dissociated unimodal and multimodal versions of the object by modulating their firing rates according to the modality condition. A population-decoding analysis confirmed that the PER could perform both modality-invariant and modality-specific object decoding-the former for recognizing an object as the same in various conditions and the latter for remembering modality-specific experiences of the same object.
摘要：
Perirhinal皮层（PER）支持多模态对象识别，但是如何在PER中集成对象的多模态信息仍然未知。这里,当大鼠执行依赖于PER的多模态目标识别任务时,我们记录了PER内的单个单位.在这项任务中,视听线索同时(多模式)或单独(单模式)呈现。我们在PER中确定了2种类型的对象选择性神经元：跨模态细胞，显示物体的恒定发射模式，而不管其模态如何，和单峰细胞，显示对特定模态的偏好。单峰细胞通过根据模态条件调节其发射速率来进一步解离对象的单峰和多峰版本。总体解码分析证实，PER可以执行模态不变和模态特定的对象解码-前者用于在各种条件下将对象识别为相同，而后者用于记住同一对象的模态特定体验。
