Quarterly report pursuant to Section 13 or 15(d)

SERIES C 9% CONVERTIBLE PREFERRED STOCK (Details)

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SERIES C 9% CONVERTIBLE PREFERRED STOCK (Details) - USD ($)
Jul. 14, 2020
Jan. 09, 2013
Mar. 31, 2021
Dec. 31, 2020
Nov. 20, 2019
SERIES C 9% CONVERTIBLE PREFERRED STOCK (Details) [Line Items]          
Preferred Stock, Dividend Payment Terms declared a dividend of one preferred share purchase right for each outstanding share of BioSig’s common stock to stockholders of record on July 27, 2020, and one right will be issued for each new share of common stock issued thereafter. Each right will initially trade with common stock, and will allow its holder to purchase from BioSig one one-thousandth of a share of Series F Junior Participating Preferred stock        
Preferred Stock, Voting Rights In the event that a person or group acquires beneficial ownership of 12% or more of BioSig’s then outstanding common stock, subject to certain exceptions, each right would entitle its holder (other than such person or members of such group) to purchase additional shares of BioSig’s common stock having a market value of two times the exercise price of the right. In addition, at any time after a person or group acquires 12% or more of BioSig’s outstanding common stock (unless such person or group acquires 50% or more), the Board may exchange one share of BioSig’s common stock for each outstanding right (other than rights owned by such person or group, which would have become void). The Rights Plan could make it more difficult for a third party to acquire control of BioSig or a large block of our common stock without the approval of our board of directors. The rights will expire on July 13, 2021, unless terminated earlier by our board of directors        
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 3.75 $ 6.16
Series C Preferred Stock [Member]          
SERIES C 9% CONVERTIBLE PREFERRED STOCK (Details) [Line Items]          
Temporary Equity, Shares Authorized   4,200      
Preferred Stock, Dividend Rate, Percentage   9.00%      
Temporary Equity, Par Value   $ 1,000      
Preferred Stock, Dividend Payment Terms   payable quarterly      
Preferred Stock, Voting Rights   The holders of the Series C Preferred Stock vote together with the holders of our common stock on an as-converted basis but may not vote the Series C Preferred Stock in excess of the beneficial ownership limitation of the Series C Preferred Stock.  The beneficial ownership limitation is 4.99% of our then outstanding shares of common stock following such conversion or exercise, which may be increased to up to 9.99% of our then outstanding shares of common stock following such conversion or exercise upon the request of an individual holder.      
Preferred Stock, Beneficial Ownership Limitation and Covenant, Description   The beneficial ownership limitation is determined on an individual holder basis, such that the as-converted number of shares of one holder is not included in the shares outstanding when calculating the limitation for a different holder.      
Temporary Equity, Shares Issued     105 105  
Temporary Equity, Shares Outstanding     105 105  
Dividends Payable     $ 74,547 $ 72,217