scholarly journals Research Note: Role of the hippocampus in spatial memory in Japanese quail

2020 ◽  
Vol 99 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Flore Lormant ◽  
Fabien Cornilleau ◽  
Paul Constantin ◽  
Maryse Meurisse ◽  
Léa Lansade ◽  
...  
Keyword(s):  
Spatial Memory ◽  
Japanese Quail ◽  
Research Note

scholarly journals Space Radiation-Induced Alterations in the Hippocampal Ubiquitin-Proteome System

2021 ◽  
Vol 22 (14) ◽  
pp. 7713
Author(s):  
Alyssa Tidmore ◽  
Sucharita M. Dutta ◽  
Arriyam S. Fesshaye ◽  
William K. Russell ◽  
Vania D. Duncan ◽  
...  
Keyword(s):  
Spatial Memory ◽  
Memory Performance ◽  
Space Radiation ◽  
Label Free ◽  
Proteomic Profiling ◽  
Neurocognitive Deficits ◽  
Male Wistar Rats ◽  
Radiation Induced ◽  
Induced Changes

Exposure of rodents to <20 cGy Space Radiation (SR) impairs performance in several hippocampus-dependent cognitive tasks, including spatial memory. However, there is considerable inter-individual susceptibility to develop SR-induced spatial memory impairment. In this study, a robust label-free mass spectrometry (MS)-based unbiased proteomic profiling approach was used to characterize the composition of the hippocampal proteome in adult male Wistar rats exposed to 15 cGy of 1 GeV/n 48Ti and their sham counterparts. Unique protein signatures were identified in the hippocampal proteome of: (1) sham rats, (2) Ti-exposed rats, (3) Ti-exposed rats that had sham-like spatial memory performance, and (4) Ti-exposed rats that impaired spatial memory performance. Approximately 14% (159) of the proteins detected in hippocampal proteome of sham rats were not detected in the Ti-exposed rats. We explored the possibility that the loss of the Sham-only proteins may arise as a result of SR-induced changes in protein homeostasis. SR-exposure was associated with a switch towards increased pro-ubiquitination proteins from that seen in Sham. These data suggest that the role of the ubiquitin-proteome system as a determinant of SR-induced neurocognitive deficits needs to be more thoroughly investigated.

Role of clay in detoxification of aflatoxin B1 in growing Japanese quail with reference to gender

2021 ◽  
Author(s):  
Khalid M. Mahrose ◽  
Izabela Michalak ◽  
Mohamed Farghly ◽  
Abdelmotaleb Elokil ◽  
Runxiang Zhang ◽  
...  
Keyword(s):  
Japanese Quail ◽  
Aflatoxin B1

scholarly journals Research Note: Eggshell Quality in Japanese Quail Fed Different Fatty Acids

1992 ◽  
Vol 71 (9) ◽  
pp. 1568-1571
Author(s):  
C. VILCHEZ ◽  
S.P. TOUCHBURN ◽  
E.R. CHAVEZ ◽  
P.C. LAGUE
Keyword(s):  
Fatty Acids ◽  
Japanese Quail ◽  
Research Note ◽  
Eggshell Quality

Confounded Delay-of-KR Design Revisited: Reply to Bilodeau

1965 ◽  
Vol 20 (1) ◽  
pp. 173-174 ◽  
Author(s):  
James A. Dyal
Keyword(s):  
Scientific Literature ◽  
Previous Experiment ◽  
Research Note ◽  
Scientific Inference

In response to Bilodeau's critique of a previous experiment three points are made: (1) relatively small ns and multiple Es are within the logic of scientific inference, (2) when you replicate you replicate, (3) there is a misunderstanding of the role of a research note in the scientific literature. The Dyal experiment then is a positive replication of Greenspoon and Foreman and thus contrasts with Bilodeau and Ryan's failure to replicate.

scholarly journals Biases in object location estimation: the role of camera rotations and translation

2021 ◽  
Author(s):  
Vladislava Segen
Keyword(s):  
Older Adults ◽  
Spatial Memory ◽  
Spatial Information ◽  
Location Estimation ◽  
Object Location ◽  
Systematic Bias ◽  
Accurate Representation ◽  
Object Locations ◽  
Age Related

The current study investigated a systematic bias in spatial memory in which people, following a perspective shift from encoding to recall, indicated the location of an object further to the direction of the shit. In Experiment 1, we documented this bias by asking participants to encode the position of an object in a virtual room and then indicate it from memory following a perspective shift induced by camera translation and rotation. In Experiment 2, we decoupled the influence of camera translations and camera rotations and examined also whether adding more information in the scene would reduce the bias. We also investigated the presence of age-related differences in the precision of object location estimates and the tendency to display the bias related to perspective shift. Overall, our results showed that camera translations led to greater systematic bias than camera rotations. Furthermore, the use of additional spatial information improved the precision with which object locations were estimated and reduced the bias associated with camera translation. Finally, we found that although older adults were as precise as younger participants when estimating object locations, they benefited less from additional spatial information and their responses were more biased in the direction of camera translations. We propose that accurate representation of camera translations requires more demanding mental computations than camera rotations, leading to greater uncertainty about the position of an object in memory. This uncertainty causes people to rely on an egocentric anchor thereby giving rise to the systematic bias in the direction of camera translation.

scholarly journals Pandemic Parliaments: Canadian Legislatures in a Time of Crisis

2020 ◽  
Vol 53 (2) ◽  
pp. 379-384 ◽  
Author(s):  
Erica Rayment ◽  
Jason VandenBeukel
Keyword(s):  
At Risk ◽  
Research Note ◽  
Truncated Form

Canadian legislatures’ responses to the COVID-19 pandemic have raised questions about whether and how parliaments should continue to meet during the pandemic (Reid, 2020; Thomas, 2020a). The purpose of this research note is twofold: (1) to document how Canadian legislatures have changed in response to the COVID-19 pandemic and (2) to assess the effect of these responses on legislatures’ ability to fulfill their core functions. Through an analysis of parliamentary records from all elected federal, provincial and territorial legislatures in Canada, we find that the role of parliaments as sites of citizen representation has suffered the most, whereas the scrutinizing and legislative functions of parliaments have tended to be preserved, albeit in a significantly truncated form. We argue that patterns in legislatures' varied responses to the pandemic reveal which aspects of parliamentary functioning these bodies de facto prioritize and which are at risk of being eroded.

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