Functional Neuroimaging Investigation of the Neural Mechanisms for Successful Feeling-of-Knowing Judgments

Greenberg, Ronit

Title:

Functional Neuroimaging Investigation of the Neural Mechanisms for Successful Feeling-of-Knowing Judgments

dc.contributor.author	Greenberg, Ronit
dc.contributor.department	Psychology
dc.date.accessioned	2009-06-08T19:13:35Z
dc.date.available	2009-06-08T19:13:35Z
dc.date.issued	2009-05-04
dc.description.abstract	A feeling-of-knowing (FOK) is a sense of knowing that an item would be recognizable if seen again later, despite one’s current inability to recall that item from memory. An FOK judgment occurs after a memory search and is a prediction of future recognition. The current study aimed to: (1) determine the brain regions involved in successful (accurate) and unsuccessful (inaccurate) episodic FOKs; (2) replicate the ability of FOKs to predict recognition outcomes and recollection/know (R/K) judgments; (3) explore the different effects of familiarity and recollection on high and low FOKs; and (4) determine the effect of overlearning on FOKs and their ability to predict recognition and R/K outcomes. Nine younger adults (ages 18-26) participated in 2 experimental sessions (encoding and testing), separated by a 48-hour delay (n = 4 for fMRI data). The amount of exposure to the studied items (1 versus 3 presentations) was manipulated. Statistically significant results include (1) a repetition effect such that the words that were repeated during encoding have higher mean recall, mean FOK rating, mean recognition accuracy, and mean R/K than those words presented only once; (2) activity in the ventral lateral prefrontal cortex (PFC) for successful or accurate FOKs; (3) activity in the anterior PFC for accurate high FOKs; and (4) activity in the PFC and anterior cingulate for correctly recognized and remembered items. In future, additional participants are necessary to conduct further and more detailed analyses.	en
dc.description.advisor	Hertzog, Chris - Faculty Mentor ; Schumacher, Eric - Committee Member/Second Reader
dc.identifier.uri	http://hdl.handle.net/1853/28154
dc.language.iso	en_US	en
dc.publisher	Georgia Institute of Technology	en
dc.subject	Overlearning	en
dc.subject	FMRI	en
dc.subject	FOK	en
dc.subject	PFC	en
dc.subject	Differential repetition	en
dc.subject	Functional neuroimaging	en
dc.subject	Feeling of knowing	en
dc.subject	Recollection	en
dc.subject	Recognition	en
dc.subject	Familiarity	en
dc.title	Functional Neuroimaging Investigation of the Neural Mechanisms for Successful Feeling-of-Knowing Judgments	en
dc.type	Text
dc.type.genre	Undergraduate Thesis
dspace.entity.type	Publication
local.contributor.corporatename	College of Sciences
local.contributor.corporatename	School of Psychology
local.contributor.corporatename	Undergraduate Research Opportunities Program
local.relation.ispartofseries	Undergraduate Research Option Theses
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