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Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2024
Aug. 05, 2024
Document and Entity Information [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Jun. 30, 2024  
Securities Act File Number 001-40886  
Entity Registrant Name Cognition Therapeutics, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 13-4365359  
Entity Address, Address Line One 2500 Westchester Ave.  
Entity Address, City or Town Purchase  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10577  
City Area Code 412  
Local Phone Number 481-2210  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol CGTX  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   40,132,961
Entity Central Index Key 0001455365  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2024  
Document Fiscal Period Focus Q2  
Amendment Flag false