SHAREHOLDERS' EQUITY - Narrative (Details)					1 Months Ended					12 Months Ended
	Nov. 15, 2021 USD ($) $ / shares shares	Aug. 31, 2021 $ / shares shares	Apr. 30, 2021 USD ($) shares	Dec. 01, 2020 USD ($) item $ / shares shares	Sep. 30, 2021 $ / shares shares	Jun. 30, 2021 $ / shares shares	Sep. 30, 2020 USD ($) shares	Jul. 31, 2020 USD ($) item shares	Jun. 30, 2020 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Jun. 09, 2021 $ / shares shares	Dec. 31, 2020 $ / shares shares	Apr. 30, 2020 $ / shares
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Common stock, shares authorized		900,000,000			180,000,000					180,000,000		900,000,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.001			$ 0.001					$ 0.001		$ 0.001
Common stock, shares issued										12,918,866		11,275,788
Common stock, shares outstanding										12,918,866		11,275,788
Reverse stock split ratio		0.2			0.2
Fractional shares issued					0
Authorized amount of shares that can be issued by the company | $									$ 300,000
Shares issued	909,262			3,271,541		156,032		25,185
Number Of Units Issued				3,271,541
Share price | $ / shares	$ 6.19					$ 4.00
Number of common stock that will be issued per unit				1					1
Shares issue price | $ / shares	$ 5.25			$ 3.20					$ 4.05
Number of warrants that will be issued per unit				1					0.5
Common share purchase warrants per unit				1							1
Term of warrants				5 years							48 months
Warrant exercise price (in dollars per share) | $ / shares				$ 3.90					$ 5.65		$ 7.55		$ 5.00
Proceeds from Issuance of Private Placement | $	$ 4,750,000			$ 9,500,000				$ 102,000
Value of shares issued on settlement of employee compensation | $	$ 435,000
Number of surgeons who are majority owners | item								2
Shares issued on settlement of accounts payable							10,000
Accounts payable settled on issuance of common stock | $							$ 40,000
Number of management members who participated in the financing | item				3
Number of independent members who participated in the financing | item				2
Outstanding principal | $										$ 60,000
Shares issued on conversion of debt										13,384
Amended Stock Option Plan
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of shares authorized										2,000,000
Three Management Members And Two Independent Members
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Shares issued				95,291
Sentry Neuromonitoring, LLC
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Value of common stock issuable | $			$ 1,625,000
Common stock issuable			237,226
Held in escrow, Value | $			$ 650,000
Held in escrow, Shares			94,891
Common stock lock up period			12 months