Hi all,
Dr Arianna Moccia will be presenting her talk entitled: *How do we select
memories? Goal-states and consequences of the pre-retrieval control of
episodic memory*
We really hope to see everyone at YNiC! The talks will take place *next
Wednesday (the 25th of October) at 4pm*. If you are unable to attend the
talk in person, you can catch it on zoom using the following link:
https://york-ac-uk.zoom.us/j/96762553290?pwd=UEluT1lMd3V5azY5YzNmWkJCV1VTdz…
<https://www.google.com/url?q=https://york-ac-uk.zoom.us/j/96762553290?pwd%3DUEluT1lMd3V5azY5YzNmWkJCV1VTdz09&sa=D&source=calendar&ust=1681979309240863&usg=AOvVaw1V8mxn3A7UZR8fs1w-oipq>
.
Quick reminder that all our upcoming seminar talks are on our YNiC seminar
calendar:
https://calendar.google.com/calendar/u/0?cid=Y19mZDNiNjNhY2Y4NzNiZDVkYzhhZD…
We look forward to seeing you then!
Becky
Selective retrieval means picking specific memories out of many encoded
traces to
inform present actions. To do so, control processes need to act prior to
the point of retrieval.
Neuroimaging has shown that we can select memories in this way, but little
is known about the
factors and mechanisms that enable pre-retrieval selection in episodic
memory. We tested this in
a first set of electrophysiological studies. Results showed that internal
control modified
recollection-related ERPs – the left parietal old/new effects – when the
external retrieval cues
overlapped with targeted traces. Goal-related effects arising from
comparing ERPs elicited by the
new items also tracked cue overlap before recollection was complete,
indicating that control was
engaged prior to retrieval. But how is selection achieved during retrieval?
Using multivariate
pattern analysis in these two datasets, we showed that study phase neural
patterns matching the
current retrieval goal were reinstated before the retrieval cues were
presented, indicating that
study context was reinstated in preparation to retrieve targeted
information. A final study using
fMRI to investigate selective retrieval in the brain showed that internal
goals alone modified
activation and neural representations of task-relevant features in
content-specific regions. Goal-
directed preparatory reinstatement of study context was detected in both
domain-general control
regions and content-specific regions. However, while activation in domain
general areas
predicted subsequent memory performance, goal-directed reinstatement did
not do so
significantly, suggesting that further, generic control mechanisms may
support readiness to
remember sought-for episodic information.
--
Rebecca Lowndes
Research Technician
York Neuroimaging Centre