The effect of CNQX on self-administration: present in nicotine, absent in methamphetamine model.

"Conflict of interest The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision."

"The author(s) declare financial support was received for the research, authorship, and/or publication of this article. This study was performed at Masaryk University as part of the project “Preclinical and clinical research in pharmacokinetics, neuropsychopharmacology and personalized pharmacotherapy in oncology” number MUNI/A/1342/2022 with the support of the Specific University Research Grant, as provided by the Ministry of Education, Youth and Sports of the Czech Republic in the year 2023."