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Cover
Sep. 09, 2021
Jun. 03, 2021
Cover [Abstract]    
Document Type 8-K  
Document Period End Date Sep. 09, 2021  
Entity Registrant Name NEUROPACE, INC.  
Entity Incorporation, State or Country Code DE  
Entity File Number 001-40337  
Entity Tax Identification Number 22-3550230  
Entity Address, Address Line One 455 N. Bernardo Avenue  
Entity Address, City or Town Mountain View  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94043  
City Area Code 650  
Local Phone Number 237-2700  
Written Communications false  
Soliciting Material false  
Pre-commencement Tender Offer false  
Pre-commencement Issuer Tender Offer false  
Title of 12(b) Security Common Stock, $0.001 par value per share  
Trading Symbol NPCE  
Security Exchange Name NASDAQ  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Central Index Key   0001528287
Amendment Flag   false