Drug Name	Cognitive Effects	Notes
Phenobarbitol	Difficulty sustaining attention Decreased vigilance Slower reaction time Impaired short-term memory Decreased performance IQ and mental slowing Difficulty with language skills
Phenytoin	Decline in concentration Memory difficulties Slowed mental speed Incoordination (especially visuomotor functions) Negative effects on intelligence and mental slowing
Carbamazepine	Mild adverse cognitive effects caused by sedation incurred by drug difficulty making decisions slight memory impairment some trouble with attention some mental slowing Psychomotor slowing Modest effect on learning and memory	Effects are usually not severe.
Valproic Acid	Impaired attention Difficulty with coordination and visuomotor functions Psychomotor slowing Some difficulty with complex decision-making Modest effect on learning and memory	Effects are usually not severe.
Clonazepam, Clobazam and other Benzodiazepines	Mental Slowing Severe sedation Decreased attention Irritability Psychomotor impairment	Clobazam is less likely than clonazepam to cause psychomotor impairments or the same extent of sedation