Transcranial temporal interference stimulation (tTIS) is a novel non-invasive neuromodulation technique with the potential to precisely target deep brain structures. This study explores the neural and behavioral effects of tTIS on the superior colliculus (SC), a region involved in eye movement control, in mice. Computational modeling revealed that tTIS delivers more focused stimulation to the SC than traditional transcranial alternating current stimulation. In vivo experiments, including Ca²⁺ signal recordings and eye movement tracking, showed that tTIS effectively modulates SC neural activity and induces eye movements. A significant correlation was found between stimulation frequency and saccade frequency, suggesting direct tTIS-induced modulation of SC activity. These results demonstrate the precision of tTIS in targeting deep brain regions and regulating eye movements, highlighting its potential for neuroscientific research and therapeutic applications.
Animals ; Superior Colliculi/physiology* ; Transcranial Direct Current Stimulation/methods* ; Eye Movements/physiology* ; Male ; Mice ; Mice, Inbred C57BL

Objective:This study aimed to assess left atrial function in adults across various age groups using 4-dimensional automated left atrial quantification(4D Auto LAQ)technology.The study also aimed to compare the differences in two-dimensional(2D)and four-dimensional(4D)strains of the left atrium among different age groups, with the goal of enhancing the clinical utility of 4D Auto LAQ.Methods:A total of 409 healthy volunteers were recruited for the research.Two-dimensional and four-dimensional images were obtained using a GE Vivid E95 ultrasound system with a 4Vc four-dimensional probe.The study examined variations in 2D and 4D ultrasound parameters across various age groups.Furthermore, the relationship between left atrial reservoir strain(LASr), Left atrial conduit strain(LAScd), left atrial contraction strain(LASct), and age was explored.Results:The study involved 409 volunteers, with 217 males and 192 females, who were categorized into three age groups: young(18-45 years, n=56), middle-aged(46-65 years, n=202), and elderly(>65 years, n=151).Conventional ultrasound measurements indicated changes in left atrial anterior-posterior diameter with age progression: (31.70±3.65)mm for the young group, (34.02±3.91)mm for the middle-aged group, and(35.2±4.37)mm for the elderly group( P<0.01).The 2D and 4D left atrial parameters across the age groups were as follows: LASr(2D)(%): 37.48±7.51, 30.95±8.23, 26.9±7.56( P<0.01); LA VImax(ml/m 2): 23.54±5.79, 26.33±7.6, 28.99±8.15( P<0.01); LASr(%): 31.2±17.07, 22.5±8.59, 19.49±7.47( P<0.01).Both 2D and 4D left atrial parameters exhibited significant associations with age.Specifically, the correlations between LASr(2D)(%), LAScd(2D)(%), LASr(%), LAScd(%), and age were -0.429, 0.580, -0.354, 0.298, respectively( P<0.01). Conclusions:The 4D Auto LAQ technology is efficient in assessing left atrial function across various age groups, with age playing a significant role in influencing left atrial parameters.When compared to other ultrasound parameters, both 2D and 4D left atrial strain parameters have the ability to detect differences at an early stage, making them suitable for the early screening, evaluation, and monitoring of age-related left atrial dysfunction, especially in the elderly population.

ObjectiveTo develop a bilateral rehabilitation robot motion assistance strategy based on admittance control, so that rehabilitation physicians can assist patients in rehabilitation training through remote teaching. MethodsA bilateral remote rehabilitation platform with upper limb terminal traction was constructed. Based on the velocity admittance control, the interactive movement between the master robot and the rehabilitation physician was realized, and the position information transmission of the master-slave robot was realized through the communication framework built. The slave robot received the position coordinates of the main robot, and drove the patient to carry out rehabilitation exercises under the attitude admittance controller. ResultsThe robot could drive the patient to accurately track the trajectory of the doctor's teaching in real time, and improve the safety and compliance of the training and human-computer interaction. ConclusionBy introducing two admittance controllers, the trajectory of the physician's end can be accurately tracked when driving the patient's movement from the robotic arm, which effectively avoids the discomfort of the patient's arm in process of rehabilitation.

OBJECTIVE： To design Proton pump inhibitor （PPI） medical order evaluation software， and to promote rational drug use in clinic. METHODS： According to the use of PPI （PPI injection as an example） of inpatients in a Third Grade Class A hospital （hereinafter referred to as "sample hospital"）， the evaluation process of medical order evaluation software was designed. On this basis， medical order evaluation software for inpatients was developed in collaboration with computer engineers. Taking the detection rate of irrational drug use and the time consuming per capita as indicators， the effects of software evaluation and manual evaluation were compared. Dispensing medical orders of PPI injection in PIVAS of sample hospital was evaluated with the software pre-evaluation in Feb. 2018. Irrational use of PPI injection （including irrational medication for treatment， prevention and non-indication） in the inpatients was evaluated retrospectively during Jan. 2015-Dec. 2017. RESULTS： The software of PPI audit includes four modules：users and tasks （timing audit）， system settings， confirmation of audit results （check the results audited by the software automatically） and reports exporting. Compared with manual evaluation， there was no significant difference in detection rate of irrational drug use in software audit （69.50％ vs. 77.00％， P＞0.05）； the time consuming per capita was shortened significantly （9.25 min vs. 1.50 min， P＜0.05）. In the application of pre-evaluation， 27 （2.23％） were irrational for treatment， 318 （26.24％） were irrational for prevention and 602 （49.67％） for non-indications. In the application of retrospective review， 4 884 （2.68％） were irrational medication for treatment， 50 399 （27.67％） irrational medication for prevention and 85 106 （46.72％） medication without indications. CONCLUSIONS： The application of PPI medical order evaluation software shortens the time of pharmacist's evaluation， improves the efficiency of evaluation， and promotes the rational use of PPI in clinic.