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Other Income (Details Narrative) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Sep. 30, 2023
Sep. 30, 2021
Research and development incentive income $ 500,000 $ 600,000 $ 1,600,000 $ 2,000,000    
Grant income 0 0 0 25,000    
Deferred grant income 900,000   900,000   $ 900,000  
Incentive and tax receivables 1,500,000   1,500,000   2,500,000  
Australia, Dollars            
Research and development incentive income 800,000 $ 900,000 2,400,000 $ 3,100,000    
Incentive and tax receivables $ 2,300,000   2,300,000   3,900,000  
Anavex [Member]            
Research and development incentive income         $ 500,000 $ 500,000
Michael J Fox [Member]            
Research and development incentive income     $ 1,000,000