Dr. LI Wang On, AlexAlexDr. LI Wang OnYuen, Sung Lai KennethSung Lai KennethYuenProf. YU Kai Ching, CalvinCalvinProf. YU Kai Ching2024-04-252024-04-252023Li, W. O., Yuen, S. L., Yu, K. C. (2023). A tDCS study in predicting subjective time perception with performance in attention and working memory tasks. In ECP (Ed.). Abstracts and programme book of the 18th european congress of psychology, 3-6 July 2023, Brighton, UK. 18th European Congress of Psychology, Brighton, UK (pp. 278).Hogrefe AG.2673-8627http://hdl.handle.net/20.500.11861/9614A potential hypothesis to subjective time perception is how the attention and working memorycomponents keep track of the time intervals and other related stimulations. The influence applied tothese two cognitive components thus might influence perceived time duration. This study is a registeredreport in the Open Science Framework. Two regions of interest relating to subjective time perception,attention and working memory, right DLPFC and cerebellum, were separately stimulated with transcranialdirect current stimulation (tDCS) in two experiments. 63 subjects (Male: 33, Female:30, mean age=30,s.d.=2.7) completed behavioural tasks including a time discrimination task, an Attention Network Task(ANT) and a n-back task after 20 minutes of tDCS (2mA current, 25cm² electrode). Each subjectparticipated in three stimulation conditions, anodal, cathodal and sham, separated at least one weekapart. Thirty-five joined the right DLPFC condition, while the rest joined the cerebellum condition. A totalof 63 participants completed all the procedures satisfactorily (right DLPFC: 33; cerebellum: 30). Cathodalstimulation condition of the right DLPFC group showed a marginal overestimation effect (F(2,64)=2.78,p=.07, η²=0.01) and an increase of reaction time in the ANT (F(2,64)=3.24, p=.05, η²<0.01). Regressionanalyses show relationships among perceived duration, attention and working memory after tDCSperturbation (F(4,28)=2.78-4.53, p<.05). In general, participants scoring lower in the executive functioningsub-score of ANT (i.e. inhibiting distraction) and performing better in the n-back task tend tounderestimate duration. The linkage is apparent only under tDCS perturbation to the related neuralcircuits but is not significant in the sham condition. To summarise, subjective time perception sharessimilar neural circuits with attention and working memory. Still, tDCS does not seem to influencesubjective time perception, attention and working memory simultaneously and systematically.enConference Paper0.1024/2673-8627/a000043