東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Experience-driven neural plasticity:...

Ghahremani, Dara.

Linked to FindBook

Google Book

Amazon

博客來

Experience-driven neural plasticity: Evidence from neuroimaging of repetition priming.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Experience-driven neural plasticity: Evidence from neuroimaging of repetition priming./
Author:	Ghahremani, Dara.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2005,
Description:	155 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5566.
Contained By:	Dissertation Abstracts International65-11B.
Subject:	Neurosciences. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3153093
ISBN:	9780496135394

Experience-driven neural plasticity: Evidence from neuroimaging of repetition priming.
Ghahremani, Dara.

Experience-driven neural plasticity: Evidence from neuroimaging of repetition priming. - Ann Arbor : ProQuest Dissertations & Theses, 2005 - 155 p.

Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5566.

Thesis (Ph.D.)--Stanford University, 2005.

People accumulate knowledge about thousands of words and objects over the lifespan, but the neural processes used to represent and access this knowledge is not well understood. The present functional magnetic resonance imaging (fMRI) studies investigate the relationship between neural representations of knowledge for words and objects with which people have varying levels of experience. Each of the four studies examines the neural responses corresponding to disparities in prior experience and experience gained within the experimental context (measured via repetition priming). Study 1 shows that brain activation differences for processing low- vs. high-frequency words (word frequency effect) in a network of regions are diminished with repeated processing of those items. That is, activation patterns for repeated low-frequency words and high-frequency words are virtually indistinguishable. Study 2 compares low- and high-frequency words to pseudowords with which participants presumably had no prior experience. Results indicate that the brain activation pattern for pseudowords and low-frequency words are similar, and they show equivalent repetition effects. To dissociate functional subcomponents of the brain networks determined in Studies 1 and 2, Study 3 repeats the experiment in Study 2 with the exception of presenting words in the auditory modality. Modality-independent word frequency and repetition effects are found in prefrontal regions, but high-level modality-specific regions (e.g., fusiform cortex and superior temporal sulcus) show these effects separately across the visual and auditory studies. Study 4 tests findings from Studies 1--3 in the domain of object knowledge by presenting participants with initial and repeated presentations of common and novel objects.

ISBN: 9780496135394Subjects--Topical Terms:

588700
Neurosciences.

Experience-driven neural plasticity: Evidence from neuroimaging of repetition priming.
LDR:02743nmm a2200301 4500 001 2117488
005 20170530090052.5
008 180830s2005 ||||||||||||||||| ||eng d
020 $a 9780496135394
035 $a (MiAaPQ)AAI3153093
035 $a AAI3153093
040 $a MiAaPQ $c MiAaPQ
100 1 $a Ghahremani, Dara. $3 3279260
245 1 0 $a Experience-driven neural plasticity: Evidence from neuroimaging of repetition priming.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2005
300 $a 155 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-11, Section: B, page: 5566.
500 $a Adviser: John D. E. Gabrieli.
502 $a Thesis (Ph.D.)--Stanford University, 2005.
520 $a People accumulate knowledge about thousands of words and objects over the lifespan, but the neural processes used to represent and access this knowledge is not well understood. The present functional magnetic resonance imaging (fMRI) studies investigate the relationship between neural representations of knowledge for words and objects with which people have varying levels of experience. Each of the four studies examines the neural responses corresponding to disparities in prior experience and experience gained within the experimental context (measured via repetition priming). Study 1 shows that brain activation differences for processing low- vs. high-frequency words (word frequency effect) in a network of regions are diminished with repeated processing of those items. That is, activation patterns for repeated low-frequency words and high-frequency words are virtually indistinguishable. Study 2 compares low- and high-frequency words to pseudowords with which participants presumably had no prior experience. Results indicate that the brain activation pattern for pseudowords and low-frequency words are similar, and they show equivalent repetition effects. To dissociate functional subcomponents of the brain networks determined in Studies 1 and 2, Study 3 repeats the experiment in Study 2 with the exception of presenting words in the auditory modality. Modality-independent word frequency and repetition effects are found in prefrontal regions, but high-level modality-specific regions (e.g., fusiform cortex and superior temporal sulcus) show these effects separately across the visual and auditory studies. Study 4 tests findings from Studies 1--3 in the domain of object knowledge by presenting participants with initial and repeated presentations of common and novel objects.
590 $a School code: 0212.
650 4 $a Neurosciences. $3 588700
650 4 $a Cognitive psychology. $3 523881
650 4 $a Experimental psychology. $3 2144733
690 $a 0317
690 $a 0633
690 $a 0623
710 2 $a Stanford University. $3 754827
773 0 $t Dissertation Abstracts International $g 65-11B.
790 $a 0212
791 $a Ph.D.
792 $a 2005
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3153093