查看更多>>摘要:目的 探讨幼儿时期动作发展水平与抑制控制、认知灵活性的神经加工差异特征,为幼儿动作学习和认知发展提供依据.方法 于2023年3月20-31日,在西安市某2所幼儿园招募了 84名4~6岁儿童,采用MOBAK-KG动作技能评估量表评估幼儿动作发展水平;采用GO/no-go任务范式测试幼儿抑制控制能力,维度卡片变换排序(DCCS)任务范式测试幼儿认知灵活性;通过功能近红外光谱脑成像(fNIRS)监测幼儿在完成抑制控制和认知灵活性任务期间大脑前额叶皮层血氧动力学信号,采用Matlab软件和Homer 2插件计算幼儿任务期间前额叶氧合血红蛋白浓度.结果 动作技能高分组在抑制控制和认知灵活性任务期间任务正确率[0.95(0.92,0.97),(0.54±0.12)]均高于动作技能低分组[0.93(0.85,0.97),(0.45±0.13)](Z/t值分别为-2.09,3.14,P值均<0.05).抑制控制任务期间,动作技能高分组在左、右侧背外侧前额叶皮层(L-DLPFC、R-DLPFC),左、右侧三角部布罗卡氏区(L-PTBA、R-PTBA),左、右侧额极区(L-FPA、R-FPA)氧合血红蛋白浓度[0.24(0.10,0.41),0.34(0.16,0.62);0.30(0.07,0.52),0.26(0.09,0.53);0.15(0.01,0.43),0.34(0.10,0.67)mol/L]均大于动作技能低分组[0.04(-0.13,0.15),0.00(-0.12,0.11);-0.01(-0.17,0.14),0.04(-0.14,0.16);-0.01(-0.16,0.12),-0.03(-0.21,0.15)mol/L](Z 值分别为-4.83,-5.57,-4.77,-4.10,-3.45,-5.74,P 值均<0.01);认知灵活性任务期间,动作技能高分组在L-DLPFC、R-DLPFC、L-PTBA、R-PTBA、L-FPA、R-FPA脑区氧合血红蛋白浓度[0.21(0.03,0.36),0.28(0.15,0.45),0.15(0.05,0.30),0.20(0.05,0.37),0.04(-0.17,0.26),0.14(-0.08,0.40)mol/L]均大于动作技能低分组[0.02(-0.20,0.23),0.02(-0.12,0.21),0.00(-0.22,0.16),0.00(-0.16,0.15),-0.05(-0.25,0.06),0.01(-0.23,0.20)mol/L](Z值分别为-3.63,-4.45,-3.58,-3.75,-2.18,-1.98,P值均<0.05).结论 幼儿动作发展水平与抑制控制、认知灵活性密切相关.应重视幼儿阶段动作学习,进一步促进身心协同发展.