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Social and Behavioral Sciences Commons™
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Full-Text Articles in Social and Behavioral Sciences
Post-Training Inactivation Of The Anterior Thalamic Nuclei Impairs Spatial Performance On The Radial Arm Maze, R.E. Harvey, S.M. Thompson, L.M. Sanchez, R.M. Yoder, B.J. Clark
Post-Training Inactivation Of The Anterior Thalamic Nuclei Impairs Spatial Performance On The Radial Arm Maze, R.E. Harvey, S.M. Thompson, L.M. Sanchez, R.M. Yoder, B.J. Clark
Psychology
The limbic thalamus, specifically the anterior thalamic nuclei (ATN), contains brain signals including that of head direction cells, which fire as a function of an animal's directional orientation in an environment. Recent work has suggested that this directional orientation information stemming from the ATN contributes to the generation of hippocampal and parahippocampal spatial representations, and may contribute to the establishment of unique spatial representations in radially oriented tasks such as the radial arm maze. While previous studies have shown that ATN lesions can impair spatial working memory performance in the radial maze, little work has been done to investigate spatial …
Visual Landmark Information Gains Control Of The Head Direction Signal At The Lateral Mammillary Nuclei, R.M. Yoder, J.R. Peck, J.S. Taube
Visual Landmark Information Gains Control Of The Head Direction Signal At The Lateral Mammillary Nuclei, R.M. Yoder, J.R. Peck, J.S. Taube
Psychology
The neural representation of directional heading is conveyed by head direction (HD) cells located in an ascending circuit that includes projections from the lateral mammillary nuclei (LMN) to the anterodorsal thalamus (ADN) to the postsubiculum (PoS). The PoS provides return projections to LMN and ADN and is responsible for the landmark control of HD cells in ADN. However, the functional role of the PoS projection to LMN has not been tested. The present study recorded HD cells from LMN after bilateral PoS lesions to determine whether the PoS provides landmark control toLMNHDcells. After the lesion and implantation of electrodes,HDcell activity …
The Vestibular Contribution To The Head Direction Signal And Navigation, R.M. Yoder, J.S. Taube
The Vestibular Contribution To The Head Direction Signal And Navigation, R.M. Yoder, J.S. Taube
Psychology
Spatial learning and navigation depend on neural representations of location and direction within the environment. These representations, encoded by place cells and head direction (HD) cells, respectively, are dominantly controlled by visual cues, but require input from the vestibular system. Vestibular signals play an important role in forming spatial representations in both visual and non-visual environments, but the details of this vestibular contribution are not fully understood. Here, we review the role of the vestibular system in generating various spatial signals in rodents, focusing primarily on HD cells. We also examine the vestibular system's role in navigation and the possible …
Is Navigation In Virtual Reality With Fmri Really Navigation?, J.S. Taube, S. Valerio, R.M. Yoder
Is Navigation In Virtual Reality With Fmri Really Navigation?, J.S. Taube, S. Valerio, R.M. Yoder
Psychology
Identifying the neural mechanisms underlying spatial orientation and navigation has long posed a challenge for researchers. Multiple approaches incorporating a variety of techniques and animal models have been used to address this issue. More recently, virtual navigation has become a popular tool for understanding navigational processes. Although combining this technique with functional imaging can provide important information on many aspects of spatial navigation, it is important to recognize some of the limitations these techniques have for gaining a complete understanding of the neural mechanisms of navigation. Foremost among these is that, when participants perform a virtual navigation task in a …
Relationships Between Facebook Intensity, Friendship Contingent Self-Esteem, And Personality In U.S. College Students, T.F. Pettijohn Ii, K.E. Lapiene, T.F. Pettijohn, A.L. Horting
Relationships Between Facebook Intensity, Friendship Contingent Self-Esteem, And Personality In U.S. College Students, T.F. Pettijohn Ii, K.E. Lapiene, T.F. Pettijohn, A.L. Horting
Psychology
U.S. college students (N = 200) completed measures of Facebook use, friendship contingent self-esteem, personality, and narcissism. Those who strongly connected their self-esteem with their quality of friendship relationships were predicted to be more active Facebook users. As predicted, a significant positive relationship between Facebook intensity and friendship contingent self-esteem was found. No significant relationships between Facebook use and personality or narcissism were discovered. Implications for how and why college students use social networking media are discussed, including connections to previous research which discuss the relationship between high friendship contingent self-esteem and risk for depressive symptoms. © 2008 Cyberpsychology.
Gender Differences In Depression: Assessing Mediational Effects Of Overt Behaviors And Environmental Reward Through Daily Diary Monitoring, M.M. Ryba, D.R. Hopko
Gender Differences In Depression: Assessing Mediational Effects Of Overt Behaviors And Environmental Reward Through Daily Diary Monitoring, M.M. Ryba, D.R. Hopko
Psychology
Gender differences in the prevalence of depression are well documented. To further explore the relation between gender and depression, this study used daily diaries to examine gender differences within thirteen behavioral domains and whether differential frequency of overt behaviors and environmental reward mediated the relationship between gender and depression severity. The sample included 82 undergraduate students [66% females; 84% Caucasian; Mean age = 20.2 years]. Overall, females engaged in a significantly greater breadth of behavioral domains and reported a higher level of environmental reward. Females spent more time in the domains of health/hygiene, spiritual activities, and eating with others. Males …
Functional Assessments In The Rodent Stroke Model, K.L. Schaar, M.M. Brenneman, S.I. Savitz
Functional Assessments In The Rodent Stroke Model, K.L. Schaar, M.M. Brenneman, S.I. Savitz
Psychology
Stroke is a common cause of permanent disability accompanied by devastating impairments for which there is a pressing need for effective treatment. Motor, sensory and cognitive deficits are common following stroke, yet treatment is limited. Along with histological measures, functional outcome in animal models has provided valuable insight to the biological basis and potential rehabilitation efforts of experimental stroke. Developing and using tests that have the ability to identify behavioral deficits is essential to expanding the development of translational therapies. The present aim of this paper is to review many of the current behavioral tests that assess functional outcome after …
Head Direction Cell Activity In Mice: Robust Directional Signal Depends On Intact Otolith Organs, R.M. Yoder, J.S. Taube
Head Direction Cell Activity In Mice: Robust Directional Signal Depends On Intact Otolith Organs, R.M. Yoder, J.S. Taube
Psychology
The head direction (HD) cell signal is a representation of an animal's perceived directional heading with respect to its environment. This signal appears to originate in the vestibular system, which includes the semicircular canals and otolith organs. Preliminary studies indicate the semicircular canals provide a necessary component of the HD signal, but involvement of otolithic information in the HD signal has not been tested. The present study was designed to determine the otolithic contribution to the HD signal, as well as to compare HD cell activity of mice with that of rats. HD cell activity in the anterodorsal thalamus was …