Fig. 6
From: Encoding of long-term associations through neural unitization in the human medial temporal lobe
Neural responses are more similar when the stimuli are associated. a Web-based mean association scores for multi-responsive units on stimulus pairs where both stimuli were responsive (ASR–R), or one was responsive and the other one not (ASR–NR). Response-eliciting pairs have a significantly larger association score (n = 35, one-sided paired sign test, p = 0.02). Each dot represents a multi-responsive unit. Mean ± standard error of the mean are shown in red, whereas boxplots are in green (center line, median; box limits, upper and lower quartiles; notch limits, (1.57 × interquartile range)/sqrt(n)). b Association score as a function of the normalized difference in the response strength. Both quantities were significantly correlated (n = 139, Pearson correlation, r = −0.2, p = 0.019). The pairs representing the 25% with the largest differences are shown in red. c Same as b for the spike latency difference (n = 139, Pearson correlation, r = −0.28, p ~ 10−4). d Same as c for the LFP latency difference (n = 93, Pearson correlation, r = −0.22, p = 0.014)
