I together with looked at how suppression affected abilities for the associative detection decide to try considering after the new experiment
As expected, accuracy was near to ceiling, given the extensive training of the pairs and the use of a recognition test (accuracy > 95% in all conditions). Nevertheless, recognition reaction times revealed aftereffects of suppressing No-Think pictures. Averaging across valence types, we observed a significant suppression effect for No-Think (mean ± SD, 1464 ± 376 ms) compared with baseline items (1393 ± 367 ms; t(21) = 1.89, p < 0.05). (21) = 1.82, p < 0.05) but not for Neutral scenes (suppression effect, 12 ± 132 ms; t(21) = 0.54, p > 0.1), although this interaction did not reach significance (Negative vs Neutral) (t(21) = 1.42, p = 0.084). These reaction time patterns resemble the recall patterns observed by Depue et al. (2006) who also studied retrieval suppression using the current face-scene pairings (Depue et al., 2006). We also observed a significant main effect of valence on recognition time, with Negative scenes showing slower recognition than Neutral scenes (t(21) = 5.06, p < 0.001), a pattern observed in prior studies examining recognition of scenes and faces (Keightley et al., 2011).
Overall, the foregoing conclusions is actually similar to the opportunity you to definitely inhibiting Bad scenes minimizes the tendency to intrude and may change the psychological top-notch those memory so as that their return produces reduced bad apply to, at least for many who was proficient in handling the recollections. Amazingly, changes in connect with do not arise to own Neutral scenes, indicating one to suppressing unpleasant thoughts could possibly get entail most inhibitory effects maybe not expose having Neutral memory. Inside the zero situation did retrieval during Envision examples, by comparison, measurably alter the imagined affect of your own moments. A whole lot more generally, this type of results advise that inhibitory handle might, for the parallel, regulate traces in numerous representational domains (memorial and you will affective) throughout services so you can prohibit an undesirable memories out-of sense. With all this opportunity, our mission was then knowing how the proper frontoparietal manage circle leads to it hypothesized synchronous controls from memory and you can emotion, and see whether these types of benefits might be linked to a keen inhibitory code geared towards more substructures from inside the MTL.
Considered independently, inhibition outcomes emerged for negative moments (inhibition effect, 131 ± 288 ms; t
Before addressing whether retrieval suppression modulates regions related to both memory and affect, we confirmed the engagement of the right frontoparietal control network and the disengagement of MTL during retrieval suppression. First, we contrasted No-Think and Think trials aggregating conditions over both Negative and Neutral scenes (PFWE < 0.05; Fig. 2C). Consistent with previous findings, we observed more activation during No-Think trials in a large right-lateralized network, including the MFG, dorsal portion of the anterior cingulate cortex, superior frontal medial gyrus, inferior frontal gyrus, insula, superior frontal gyrus, and inferior parietal cortex. Critically, a right dorsolateral prefrontal cortex cluster, centered on the anterior MFG and previously noted for its involvement in direct memory suppression, survived whole-brain voxelwise correction (x = 30, y = 48, z = 16; zmaximum = 6.15; 1591 voxels; PFWE < 0.001; for complete whole-brain analyses, see Table 2). Thus, in agreement with previous findings using other types of suppressed material (e.g., words, objects, faces, places), the right MFG was engaged in the suppression of both Negative and Neutral scenes (Depue et al., 2007; Benoit et al., 2015). We observed no interaction surviving whole-brain correction between memory control (i.e., No-Think > Think) and Emotion, nor did we observe differences between Negative and Neutral scenes in the No-Think condition. These results suggest that a common control network suppresses retrieval regardless of the valence of the unwanted memory.