可伸缩的时间表示CA1神经颞二分的任务。(A)示意图的任务(任务1)。老鼠在跑步机上跑长或短的间隔,然后选择了向左或向右手臂与水相关奖励或长或短的间隔,分别。组间隔10 s(长)和5 s(短)块1和3和20年代(长)和10块2中(短)。(B, c)的发射模式三个代表时间细胞块1(左),2(中),3(右)。上图:光栅的长期和短周期试验。底部:PETHs长(固体)和短期(虚线)间隔试验。(C)发射的时间模式细胞块1(左),2(中),3(右)从七大鼠(n = 454)。每一行代表PETHs单一神经元的长间隔试验中每一块。颜色刻度代表每个神经元的放电频率。神经元被命令块1中根据高峰时间。 (D) Population vector analyses of the data (C). Left: Autocorrelation of the population vector matrix of block 1. Center and right: Cross-correlations of blocks 1 and 2 and blocks 1 and 3, respectively. The color scale represents Pearson’s correlation coefficient. (E) Distributions of the scaling factors of time cells between blocks 1 and 2 (blue) and blocks 1 and 3 (green). Credit: Science Advances, doi:10.1126/sciadv.abd7013
可伸缩性θ相旋进细胞。(A, A到f)的发射率和θ阶段三个代表时间细胞块1(左列),2(中心列),3(右列)在任务1。上图:光栅块短和长的时间试验。中产:PETHs长(实线)和短期(虚线)间隔试验。底部:θ阶段情节作为时间的函数。每个点代表一个动作电位的长(浅色)和短期(深色)间隔试验。每个小组代表的黑线圆线性符合数据(见材料与方法)。(B)关系的斜坡相旋进块之间的1和2块1和3之间(蓝点)和(绿点)在每个单元的任务1 (n = 351)。实线代表的这些数据的线性回归。(C)的斜率相旋进每个细胞块2除以块1(蓝色)。 Slope of phase precession in each cell in block 3 divided by that in block 1 (green). Means ± SEM. ***P < 0.001, paired t test. Credit: Science Advances, doi:10.1126/sciadv.abd7013
成对分析峰值序列的时间压缩在单θ周期。(A, A和b)左:发射率和θ阶段的两个代表对时间细胞(红色和蓝色)块1和2(任务1)。箭头表示峰值发射率。右:Cross-correlograms(20)的双块1(橙色)和2(紫色)。箭头指示20的山峰。注意20高峰时间的变化(Ab)是更大的比(Aa)(右),反映大距离PETH高峰时期的双(Ab)比(Aa)(左)。a.u。,arbitrary units. (B) Cross-correlations of PETHs of the pairs of time cells. (C) CCGs of the pairs of time cells in blocks 1 and 2 (n = 694 pairs). The orders of the pairs are the same in (B) and (C). (D) Pairwise analysis of the temporal compression of spike sequences in single theta cycles in blocks 1 and 2. Each dot represents a single neuronal pair. Horizontal axes show peak distances of PETHs, and vertical axes show peak shifts of the CCGs. The slopes of the regression line (red) were 29.2 and 15.0 ms/s in blocks 1 and 2, respectively. (E) Relationship between the time shifts of the CCGs from blocks 1 and 2. The slope of the regression line (red) was 0.98. Credit: Science Advances, doi:10.1126/sciadv.abd7013