On relating an infant's observation time of visual stimuli with choice-theory analysis.

The lateral intraparietal area (LIP) of macaques has been considered unresponsive to auditory stimulation. Recent reports, however, indicate that neurons in this area respond to auditory stimuli in the context of an auditory-saccade task. Is this difference in auditory responsiveness of LIP due to auditory-saccade training? To address this issue, LIP responses in two monkeys were recorded at two different times: before and after auditory-saccade training. Before auditory-saccade training, the animals had never been trained on any auditory task, but had been trained on visual tasks. In both sets of experiments, activity of LIP neurons was recorded while auditory and visual stimuli were presented and the animals were fixating. Before training, 172 LIP neurons were recorded. Among these, the number of cells responding to auditory stimuli did not reach significance, whereas about one-half of the cells responded to visual stimuli. An information theory analysis confirmed that no information about auditory stimulus location was available in LIP neurons in the experiments before training. After training, activity from 160 cells was recorded. These experiments showed that 12% of cells in area LIP responded to auditory stimuli, whereas the proportion of cells responding to visual stimuli remained about the same as before training. The information theory analysis confirmed that, after training, information about auditory stimulus location was available in LIP neurons. Auditory-saccade training therefore generated responsiveness to auditory stimuli de novo in LIP neurons. Thus some LIP cells become active for auditory stimuli in a passive fixation task, once the animals have learned that these stimuli are important for oculomotor behavior.

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Parent Training Based on the Choice Theory: Analysis of its Impact on Mothers’ Sense of Self-efficacy and their Conflicts with their Daughters

Razavi International Journal of Medicine ◽

10.5812/rijm.13929 ◽

2017 ◽

Vol 5 (3) ◽

Cited By ~ 1

Author(s):

Monireh Sadat Hosseini ◽

Ali Esmaeili ◽

Ali Sahebi

Keyword(s):

Parent Training ◽

Self Efficacy ◽

Choice Theory ◽

Sense Of Self ◽

Theory Analysis

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Behavioral Contract Law

Review of Law & Economics ◽

10.1515/rle-2021-0067 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Thomas S. Ulen

Keyword(s):

Behavioral Economics ◽

Rational Choice ◽

Rational Choice Theory ◽

Choice Theory ◽

Contract Law ◽

Theory Analysis ◽

Contract Formation

Abstract This article explores some behavioral findings that are relevant to three areas of contract: formation, performance, and remedies. I compare the rational choice theory analysis of various aspects of contract law with how behavioral findings lead to a change in our understanding of that area of law. A penultimate section considers several criticisms of behavioral economics. A concluding section calls for altering some settled understandings of contract law to accommodate behavioral results and for further research about some still uncertain aspects of contracting.

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Detection of viruses by electron microscopy: Increased sensitivity by direct micro-ultracentrifugation of samples

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100128821 ◽

1987 ◽

Vol 45 ◽

pp. 908-909

Author(s):

Alain R. Trudel ◽

M. Trudel

Keyword(s):

Electron Microscopy ◽

Fold Increase ◽

Observation Time ◽

Clinical Samples ◽

Maximum Speed ◽

Viral Particles ◽

Structural Details ◽

Latex Spheres ◽

Increased Sensitivity ◽

Size Of Particles

AirfugeR (Beckman) direct ultracentrifugation of viral samples on electron microscopy grids offers a rapid way to concentrate viral particles or subunits and facilitate their detection and study. Using the A-100 fixed angle rotor (30°) with a K factor of 19 at maximum speed (95 000 rpm), samples up to 240 μl can be prepared for electron microscopy observation in a few minutes: observation time is decreased and structural details are highlighted. Using latex spheres to calculate the increase in sensitivity compared to the inverted drop procedure, we obtained a 10 to 40 fold increase in sensitivity depending on the size of particles. This technique also permits quantification of viral particles in samples if an aliquot is mixed with latex spheres of known concentration.Direct ultracentrifugation for electron microscopy can be performed on laboratory samples such as gradient or column fractions, infected cell supernatant, or on clinical samples such as urine, tears, cephalo-rachidian liquid, etc..

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No effect of artificial gravity on lung function with exercise training during head-down bed rest

International Journal of Astrobiology ◽

10.1017/s1473550415000294 ◽

2015 ◽

pp. 1-7

Author(s):

Longxiang Su ◽

Yinghua Guo ◽

Yajuan Wang ◽

Delong Wang ◽

Changting Liu

Keyword(s):

Lung Function ◽

Pulse Rate ◽

Vital Capacity ◽

Pulmonary Ventilation ◽

Bed Rest ◽

Forced Expiratory Volume ◽

Observation Time ◽

Artificial Gravity ◽

Postural Changes ◽

Expiratory Flow

AbstractTo explore the effectiveness of microgravity simulated by head-down bed rest (HDBR) and artificial gravity (AG) with exercise on lung function. Twenty-four volunteers were randomly divided into control and exercise countermeasure (CM) groups for 96 h of 6° HDBR. Comparisons of pulse rate, pulse oxygen saturation (SpO2) and lung function were made between these two groups at 0, 24, 48, 72, 96 h. Compared with the sitting position, inspiratory capacity and respiratory reserve volume were significantly higher than before HDBR (0° position) (P< 0.05). Vital capacity, expiratory reserve volume, forced vital capacity, forced expiratory volume in 1 s, forced inspiratory vital capacity, forced inspiratory volume in 1 s, forced expiratory flow at 25, 50 and 75%, maximal mid-expiratory flow and peak expiratory flow were all significantly lower than those before HDBR (P< 0.05). Neither control nor CM groups showed significant differences in the pulse rate, SpO2, pulmonary volume and pulmonary ventilation function over the HDBR observation time. Postural changes can lead to variation in lung volume and ventilation function, but a HDBR model induced no changes in pulmonary function and therefore should not be used to study AG CMs.

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