Attention is a component of the working memory system responsible for keeping track of relevant information. Activities in the real world are often plagued by interference, and the source of this interference, either external or internal, might matter a great deal to individual differences in attention. By definition, external attention (also called “selective attention”) protects working memory against sensorial distractors of all kinds, while internal attention (also called “inhibition”) protects working memory against emotional impulses, irrelevant information from memory, and automatically-generated responses. At present, it is unclear if these two types of attention exist in non-human animals, and how they might impact performance on other cognitive processes, such as learning. By using a battery of diverse attention tests, here we aimed both to explore this issue, and to obtain a robust (and less task-specific) measure of attention in mice. Exploratory factor analyses revealed two factors (that, due to the design of the tests, we interpreted as external and internal attentions) accounting, in total, for 73% of the variance in attentional performance. Then, confirmatory factor analyses showed an excellent fit of the model of attention sub-divided as external and internal (with a resulting correlation of 0.43), while, contrary to our expectation, the model of attention as one general factor did not fit the data. Regarding the relationship between attention and learning (from the preparatory tasks of acquisition required for our tests of attention), higher resistance against external sources of interference promoted better learning under novel circumstances, but tended to impair performance when cognitive flexibility was required, while the opposite pattern occurred for individuals with high internal attention. The results here suggest that there can be, at least, two types of attention behind the common variance in attention tasks in mice, and that external and internal attentions might have opposing influences on learning.
Subject (authority = RUETD)
Topic
Psychology
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_6019
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (v, 42 p. : ill.)
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Subject (authority = ETD-LCSH)
Topic
Attention
Subject (authority = ETD-LCSH)
Topic
Short-term memory
Note (type = statement of responsibility)
by Bruno Sauce Silva
RelatedItem (type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier (type = local)
rucore19991600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.