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Note 12 - Segments - Schedule of Segment Information (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Revenues |  | $ 4,006,510 | $ 9,737,974
Research and Development Expense |  | 21,817,072 | 18,798,343
Stock-based compensation |  | 1,448,634 | 1,405,722
Total general and administrative expenses |  | 10,484,315 | 9,166,762
Other income |  | 1,328,510 | 1,936,436
Net loss |  | (26,966,367) | (16,290,695)
Operating Segments [Member] |  |  |
Revenues |  | 4,006,510 | 9,737,974
Research and Development Expense |  | 21,817,072 | 18,798,343
Personnel costs, excluding stock-based compensation |  | 4,988,705 | 3,995,114
Stock-based compensation |  | 965,965 | 1,186,900
Professional fees |  | 2,752,710 | 2,684,386
Insurance, taxes and similar fees |  | 1,166,374 | 985,481
Other general and administrative expenses, including IT, facilities, supplies and similar costs*** | [1] | 610,561 | 314,879
Total general and administrative expenses |  | 10,484,315 | 9,166,760
Other income |  | 1,328,510 | 1,936,436
Net loss |  | (26,966,367) | (16,290,693)
Operating Segments [Member] | Dementia with Lewy bodies [Member] |  |  |
Research and Development Expense |  | 7,052,512 | 12,102,842
Operating Segments [Member] | Frontotemporal Disorders [Member] |  |  |
Research and Development Expense |  | 1,217,784 | 36,853
Operating Segments [Member] | Recovery After Stroke [Member] |  |  |
Research and Development Expense |  | 1,427,966 | 391,659
Operating Segments [Member] | Other Clinical and Nonclinical [Member] |  |  |
Research and Development Expense | [2] | 2,504,863 | 2,499,202
Operating Segments [Member] | Personnel Costs [Member] |  |  |
Research and Development Expense |  | 5,745,558 | 2,187,221
Operating Segments [Member] | Stock Based Compensation [Member] |  |  |
Research and Development Expense |  | 482,669 | 218,822
Operating Segments [Member] | Other Research and Development Costs [Member] |  |  |
Research and Development Expense | [3] | $ 3,385,720 | $ 1,361,744
[1] | Includes, among other things, costs related to IT systems, rent and other facilities, office supplies, and similar costs.
[2] | Includes early-stage clinical studies that are not indication-specific and related costs.
[3] | Includes, among other things, CMC-related costs, shipping, packaging and storage costs, certain consulting costs, and other miscellaneous research development expenses.

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