PMC:4460889 / 11530-13321 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/4460889","sourcedb":"PMC","sourceid":"4460889","source_url":"https://www.ncbi.nlm.nih.gov/pmc/4460889","text":"In sum, we manipulated top-down and bottom-up signals at encoding and assessed how these manipulations impacted on subsequent retrieval by comparing trials including different types of distractor images. The main analyses focused on the distractor-type (boundary vs. non-boundary) and its interaction with the temporal distance between the memory probes (short vs. long), as well as on any modulation of these according to the task-relevance of the boundary events during encoding (“Distance × Boundary × Group” interaction). The memory task required chronological order judgement of events and, prompted by what was previously demonstrated2326, we anticipated that the critical attention effects (i.e., effect of “Boundary” and/or interaction between “Boundary” and “Group”) would be dependent on the temporal distance between the two task-relevant memory probes (factor of “Distance”). Supported by the anatomical knowledge810, and motivated by recent functional insights into the attention-in-memory phenomenon2326, our investigation combined the functional findings with the existing cytoarchitectonic knowledge by targeting relevant voxels within the five subregions of the right SMG (PFop, PFt, PF, PFm, and PFcm) as defined by Casper et al.9. We chose to utilise the Jülich–Düsseldorf atlas8910 because this is the most widely-used atlas regarding the IPL cytoarchitecture39, particularly in relation to mechanisms of attention control40. We predicted an influence of the manipulation of bottom-up attention at encoding to affect distractors processing in the rSMG at retrieval, and that the level of top-down effort exerted during encoding would further modulate this effect, with a possible segregation of these bottom-up and top-down influences in different subregions of the rSMG.","tracks":[]}