Nawanant Piyavhatkul

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At present, the scientific evidence concerning the effect of Bacopa monnieri on brain activity together with working memory is less available. Therefore, we aimed to determine the effect of B. monnieri on attention, cognitive processing, working memory, and cholinergic and monoaminergic functions in healthy elderly. A randomized double-blind(More)
The development of cognitive enhancers from plants possessing antioxidants has gained much attention due to the role of oxidative stress-induced cognitive impairment. Thus, this study aimed to determine the effect of ginger extract, or Zingiber officinale, on the cognitive function of middle-aged, healthy women. Sixty participants were randomly assigned to(More)
OBJECTIVE To compare the validity and reliability of the Thai version of the Rosenberg Self-Esteem Scale with the Self-Esteem Visual Analog Scale. MATERIAL AND METHOD The Rosenberg Self-Esteem Scale was translated into Thai and its content-validity checked by bacA translation. The reliability of the Rosenberg Self-Esteem Scale compared with the(More)
OBJECTIVE To examine the short-term effects on fifth-year medical students of a 4-week, breathing meditation-based, stress reduction intervention on psychiatric symptoms, memory function, intelligence, and academic achievement. MATERIALS AND METHOD Using a randomized control trial, the meditation group practiced every 8.00 to 8.20 a.m. before beginning(More)
OBJECTIVE To determine the validity and reliability of the Thai version of the Cognitive Impairment or Decline section of WHO Schedules for Clinical Assessment in Neuropsychiatry (SCAN) version 2.1. MATERIAL AND METHOD The SCAN interview version 2.1 Cognitive Impairment or Decline Section was translated into Thai and its content validity tested by back(More)
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