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Semantic coding as a basis for hemis...

Cleveland, Cathy S.

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Semantic coding as a basis for hemispheric differences in episodic memory retrieval.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Semantic coding as a basis for hemispheric differences in episodic memory retrieval./
Author:	Cleveland, Cathy S.
Description:	89 p.
Notes:	Adviser: Christine Chiarello.
Contained By:	Dissertation Abstracts International69-01B.
Subject:	Psychology, Cognitive. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298210
ISBN:	9780549419235

Semantic coding as a basis for hemispheric differences in episodic memory retrieval.
Cleveland, Cathy S.

Semantic coding as a basis for hemispheric differences in episodic memory retrieval. - 89 p.

Adviser: Christine Chiarello.

Thesis (Ph.D.)--University of California, Riverside, 2007.

Evidence is emerging that the cerebral hemispheres process information differently during episodic memory retrieval. Studies of semantic priming suggest qualitatively specialized roles for the left hemisphere (LH) and right hemisphere (RH) during cognitive tasks: in the LH, stronger meanings are quickly activated and, in the RH, a more distant set of meanings is activated. This characterization was used to examine the possibly separable memory processes of recollection and familiarity as measured by remember-know judgments. Using a word priming paradigm, Experiment 1 examined recognition memory, specifically the strength of the prime-target word relationship and its differential effect on each hemisphere. Surprisingly, for remember judgments, neither strong nor weak primes appeared to increase activation in the LH; instead, weak primes resulted in more remember false alarms in the RH compared to no priming. This suggests that the RH uses broader meaning activation from weak priming and this increases recollection instead of familiarity. In Experiment 2, greater magnitude semantic information was available to each hemisphere via sentence priming using high and low constraint stems. Here, no effect of prime type by hemisphere was seen; however, high compared to low constraint stems increased activation for remember and know judgments. It appears that a remember-know sentence priming design may not be sensitive enough to reveal an effect of meaning by hemisphere. These collective results suggest that the recognition memory processes of recollection and familiarity may well be accounted for by more global characterizations of relative hemispheric asymmetries, specifically the semantic coding model (Beeman, 1998; Chiarello, 1998). However, the way in which meaning affects hemispheric processing of mnemonic information is still in question. Perhaps strong and weak priming are not mapped onto recollection and familiarity as predicted, but are independent of the memory processes.

ISBN: 9780549419235Subjects--Topical Terms:

1017810
Psychology, Cognitive.

Semantic coding as a basis for hemispheric differences in episodic memory retrieval.
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020 $a 9780549419235
035 $a (UMI)AAI3298210
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100 1 $a Cleveland, Cathy S. $3 1273045
245 1 0 $a Semantic coding as a basis for hemispheric differences in episodic memory retrieval.
300 $a 89 p.
500 $a Adviser: Christine Chiarello.
500 $a Source: Dissertation Abstracts International, Volume: 69-01, Section: B, page: 0707.
502 $a Thesis (Ph.D.)--University of California, Riverside, 2007.
520 $a Evidence is emerging that the cerebral hemispheres process information differently during episodic memory retrieval. Studies of semantic priming suggest qualitatively specialized roles for the left hemisphere (LH) and right hemisphere (RH) during cognitive tasks: in the LH, stronger meanings are quickly activated and, in the RH, a more distant set of meanings is activated. This characterization was used to examine the possibly separable memory processes of recollection and familiarity as measured by remember-know judgments. Using a word priming paradigm, Experiment 1 examined recognition memory, specifically the strength of the prime-target word relationship and its differential effect on each hemisphere. Surprisingly, for remember judgments, neither strong nor weak primes appeared to increase activation in the LH; instead, weak primes resulted in more remember false alarms in the RH compared to no priming. This suggests that the RH uses broader meaning activation from weak priming and this increases recollection instead of familiarity. In Experiment 2, greater magnitude semantic information was available to each hemisphere via sentence priming using high and low constraint stems. Here, no effect of prime type by hemisphere was seen; however, high compared to low constraint stems increased activation for remember and know judgments. It appears that a remember-know sentence priming design may not be sensitive enough to reveal an effect of meaning by hemisphere. These collective results suggest that the recognition memory processes of recollection and familiarity may well be accounted for by more global characterizations of relative hemispheric asymmetries, specifically the semantic coding model (Beeman, 1998; Chiarello, 1998). However, the way in which meaning affects hemispheric processing of mnemonic information is still in question. Perhaps strong and weak priming are not mapped onto recollection and familiarity as predicted, but are independent of the memory processes.
590 $a School code: 0032.
650 4 $a Psychology, Cognitive. $3 1017810
650 4 $a Psychology, Psychobiology. $3 1017821
690 $a 0349
690 $a 0633
710 2 $a University of California, Riverside. $3 791122
773 0 $t Dissertation Abstracts International $g 69-01B.
790 $a 0032
790 1 0 $a Chiarello, Christine, $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3298210