{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"7f418071-0fdc-4a5a-a4c5-82dd1979d9c2","title":"人工智能哲学","author":null,"edition":null,"publisher":null,"year":null,"isbn":"7532740544","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"7f418071-0fdc-4a5a-a4c5-82dd1979d9c2","id":"7f418071-0fdc-4a5a-a4c5-82dd1979d9c2","uuid":"7f418071-0fdc-4a5a-a4c5-82dd1979d9c2","title":"人工智能哲学","normalized_title":"人工智能哲学","author":null,"edition":null,"publisher":null,"year":null,"isbn":"7532740544","isbns":["7532740544"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":501,"navigation_url":"https://workshop.closeclaw.top/ai/book/7f418071-0fdc-4a5a-a4c5-82dd1979d9c2","title_url":"https://workshop.closeclaw.top/ai/title/%E4%BA%BA%E5%B7%A5%E6%99%BA%E8%83%BD%E5%93%B2%E5%AD%A6","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/7f418071-0fdc-4a5a-a4c5-82dd1979d9c2/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/7f418071-0fdc-4a5a-a4c5-82dd1979d9c2/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/7f418071-0fdc-4a5a-a4c5-82dd1979d9c2","page_url":"https://workshop.closeclaw.top/api/ai/books/7f418071-0fdc-4a5a-a4c5-82dd1979d9c2/page","search_url":"https://workshop.closeclaw.top/api/ai/books/7f418071-0fdc-4a5a-a4c5-82dd1979d9c2/search"},"page":{"printed_page":24,"pdf_page":32,"physical_index":32,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"355bd66f5bd974ef16d00091b9c55380b12008fb7f83d5d703eead95dc5b79f7"},"chapter":"人工智能哲学","content":"1 神经活动内在概念的逻辑演算\n\nW·S·麦卡洛克和W·H·皮茨\\*\n\n1. 引言\n\n理论神经生理学建立在某些基本假定上。神经系统是一个神经元网，每个神经元都有一个细胞体和一个轴突。它们的附属部分，或称突触，总是位于…个神经元的轴突和另一个神经元的细胞体之间。神经元任何时刻都有某个阈值，刺激必须超过这个值才能激发起一个冲动。这一过程，除了它出现的这个事实和出现的时间外，都是由神经元而不是由刺激决定的。这个冲动从刺激点传播到神经元的所有部分。沿轴突传播的速度与轴突的直径直接相关，变化范围从在细的(一般也是短的)轴突中小于每秒1米，到在粗的(一般也是长的)轴突中大于每秒150)米。因此，在确定同一来源的冲动到达不同远程点的时间时，用于轴突传导的时间就显得不怎么重要了。占主导地位的是刺激通过突触从一些轴突末梢到达一些细胞体。这一点究竟是取决于个体突触的不可逆性，还是仅仅取决于大量存在的解剖学构形，仍是一个悬而未决的问题。若假定后者，则无需特别的假设，并且能解释许多已知的例外情况，但是任何关于原因的假定都要与进一步的演算相容。\n\n24","previous_page":23,"next_page":25}