Based on the provided abstract and sections from the scientific article, here's an examination of how pathway enrichment analysis was conducted:

1. **Tool Used for Pathway Enrichment Analysis:**  
   - The tool used is not explicitly mentioned in the provided text.

2. **Tool Version Number Provided:**  
   - Not described

3. **Gene Set Library Queried (e.g., GO, KEGG, Reactome or other):**  
   - The gene set library queried includes KEGG, as indicated by references to the "AMPH addiction pathway."

4. **Background Gene List Defined for Pathway Enrichment Analysis:**  
   - Not described

5. **Statistical Test Used for Enrichment Analysis:**  
   - The specific statistical test used is not detailed in the provided text.

6. **False Discovery Rate Correction Used to Control Number of False Positives:**  
   - It is mentioned that a "false discovery rate (FDR) correction" was used, indicating control over false positives.

Here's the collated information:

| Question                                                                 | Answer         |
|--------------------------------------------------------------------------|----------------|
| What tool was used for pathway enrichment analysis?                      | Not described  |
| Was a tool version number provided?                                       | Not described  |
| What gene set library was queried (e.g., GO, KEGG, Reactome or other)?    | KEGG           |
| Was a background gene list defined for pathway enrichment analysis?       | Not described  |
| What statistical test was used for enrichment analysis?                   | Not described  |
| Was false discovery rate correction used to control the number of false positives in the pathway enrichment analysis? | Yes (FDR correction) |

If you need further details, reviewing the full Methods section or related supplementary materials in the article would be necessary.