Long-term effects of chronic khat use: impaired inhibitory control S. Colzato, Lorenza Ruiz Muñoz, Manuel Jesús van den Wildenberg, Wery P. M. Bajo Molina, María Teresa Hommel, Bernhard khat SSRT dopamine So far no studies have systematically looked into the cognitive consequences of khat use. This study compared the ability to inhibit and execute behavioral responses in adult khat users and khat-free controls, matched in terms of age, race, gender distribution, level of intelligence, alcohol and cannabis consumption. Response inhibition and response execution were measured by a stop-signal paradigm. Results show that users and non-users are comparable in terms of response execution but users need significantly more time to inhibit responses to stop signals than non-users. 2024-11-26T08:00:56Z 2024-11-26T08:00:56Z 2011-01-12 journal article Colzato, L.S. et. al. Front. Psychology 1:219. [https://doi.org/10.3389/fpsyg.2010.00219] https://hdl.handle.net/10481/97360 10.3389/fpsyg.2010.00219 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Frontiers Media