parvaneh feiz; Susan emamipour; Peyman abhariyan; Shirin Kooshki
Abstract
The aim of this study was to compare the effectiveness of two methods of cup stacking game and transcranial electrical stimulation of the brain (tDCS) on cognitive inhibition, auditory attention and visual attention in students with attention deficit syndrome in 2019-2020. The present study was a quasi-experimental ...
Read More
The aim of this study was to compare the effectiveness of two methods of cup stacking game and transcranial electrical stimulation of the brain (tDCS) on cognitive inhibition, auditory attention and visual attention in students with attention deficit syndrome in 2019-2020. The present study was a quasi-experimental study with a pretest-posttest design and a control group. The present study population consists of all fifth and sixth grade elementary students with symptoms of attention deficit in Tehran in 2019-2020. Among the fifth and sixth grade students, 45 students with attention deficit symptoms were selected by convenience sampling and randomly assigned to three groups of 15 people including the brain stimulation group, the cup stacking game group and the control group. The tDCS experimental group was treated for 10 sessions of 30 minutes, and the cup stacking experimental group were exposed to ten 30-minute sessions of cup stacking game. In order to evaluate the research variables, the continuous auditory visual function test (IVA) of Rosvold, Sarason, Bransome, and Beck (1956) was used. The results of mixed analysis of variance showed that cup stacking game and tDCS are both effective in improving cognitive inhibition and auditory attention of students with attention deficit syndrome, but there is no significant difference between the two methods in influencing cognitive inhibition and auditory attention (P> 0.05). Also, only the cup stacking game had a significant effect on improving visual attention, but tDCS did not have a significant effect on improving visual attention.
Seyed Kazem Mousavi Sadati; Ali Sedghyan
Abstract
This study aimed at determining the effect of cathodal Transcranial Direct-Current Stimulation (c-tDCS) of Dorsolateral Prefrontal Cortex (DLPFC) on learning simple volleyball serves. This semi-experimental study was performed as pre-test and post-test with a control group. Thirty male volleyball players ...
Read More
This study aimed at determining the effect of cathodal Transcranial Direct-Current Stimulation (c-tDCS) of Dorsolateral Prefrontal Cortex (DLPFC) on learning simple volleyball serves. This semi-experimental study was performed as pre-test and post-test with a control group. Thirty male volleyball players with an average age of 14±0.50 years were selected through purposeful sampling based on inclusion and exclusion criteria. The participants were randomly assigned to experimental (n=15) and control (n=15) groups. During eight consecutive sessions, the left DLPFC of participants was stimulated for 10 min using sham and real c-tDCS of 1.5 mA before each session. The participants then performed 35 simple volleyball serves. Absolute error and total variability of participants' performance in pre-test, in the first, third and eighth sessions were recorded. Data analysis by repeated-measures showed that there was a significant difference between absolute error (F=14.597, P = 0.001) and total variability (F=17.523, P = 0.001) of experimental and control group performance. ANCOVA showed that absolute error and total variability of the experimental group performance was respectively (P = 0.013 and P = 0.018) in the first session, (P = 0.021 and P = 0.007) in the third session and (P = 0.001 and P = 0.001) in the eighth session, which were significantly higher than that in the control group. Thus, it seems that c-tDCS of DLPFC is associated with reduced declarative memory activity in the cognitive stage leading to a negative impact on serve learning in beginner volleyball learners.