BEHAVIORAL EFFECTS OF DIFFERENTIAL SENSORY STIMULATION IN A SENSORY-MOTOR TASK

1958 ◽  
Vol 8 ◽  
pp. 243
Author(s):  
FLETCHER MC CORD
GYMNASIUM ◽  
2019 ◽  
Vol XIX (1) ◽  
pp. 42
Author(s):  
Mihaela Anghel

One of the reasons behind the choice of the topic is that this problem of sensory-motor development in children with physical and mental deficiencies, especially in children with Down syndrome, is not sufficiently known and studied, sensory-motor development representing an important factor in their physical and social development. The reason I chose this theme and the theoretical basis from which I started was to improve the psychomotor behaviors through sensory stimulation. The assumptions we went into the research were: 1. If we use different sensory combination strategies, the Down Syndrome will be able to compensate for the psycho-motor disorders; 2. If we apply sensory stimuli to the Down Syndrome child, then there will be ameliorations of the underlying motor conduction. The research presents a case study of a 6 year and six mouth old child diagnosed with Down syndrome. The location of the study was carried out at the "Delfinul" day center of the Betania Association.


1997 ◽  
Vol 36 (04/05) ◽  
pp. 322-325
Author(s):  
A. Terao ◽  
T. Hasbroucq ◽  
I. Mouret ◽  
J. Seal ◽  
M. Akamatsu

Abstract:Single neuron activities from cortical areas of a monkey were recorded while performing a sensory-motor task (a choice reaction time task). Quantitative trial-by-trial analysis revealed that the timing of peak activity exhibited large variation from trial to trial, compared to the variation in the behavioral reaction time of the task. Therefore, we developed a multi-unit dynamic neural network model to investigate the effects of structure of neural connections on the variation of the timing of peak activity. Computer simulation of the model showed that, even though the units are connected in a cascade fashion, a wide variation exists in the timing of peak activity of neurons because of parallel organization of neural network within each unit.


Author(s):  
Florian Lanz ◽  
Véronique Moret ◽  
Eric Michel Rouiller ◽  
Gérard Loquet

2019 ◽  
Vol 116 (13) ◽  
pp. 6482-6490 ◽  
Author(s):  
Josef Faller ◽  
Jennifer Cummings ◽  
Sameer Saproo ◽  
Paul Sajda

Our state of arousal can significantly affect our ability to make optimal decisions, judgments, and actions in real-world dynamic environments. The Yerkes–Dodson law, which posits an inverse-U relationship between arousal and task performance, suggests that there is a state of arousal that is optimal for behavioral performance in a given task. Here we show that we can use online neurofeedback to shift an individual’s arousal from the right side of the Yerkes–Dodson curve to the left toward a state of improved performance. Specifically, we use a brain–computer interface (BCI) that uses information in the EEG to generate a neurofeedback signal that dynamically adjusts an individual’s arousal state when they are engaged in a boundary-avoidance task (BAT). The BAT is a demanding sensory-motor task paradigm that we implement as an aerial navigation task in virtual reality and which creates cognitive conditions that escalate arousal and quickly results in task failure (e.g., missing or crashing into the boundary). We demonstrate that task performance, measured as time and distance over which the subject can navigate before failure, is significantly increased when veridical neurofeedback is provided. Simultaneous measurements of pupil dilation and heart-rate variability show that the neurofeedback indeed reduces arousal. Our work demonstrates a BCI system that uses online neurofeedback to shift arousal state and increase task performance in accordance with the Yerkes–Dodson law.


1999 ◽  
Vol 841 (1-2) ◽  
pp. 170-183 ◽  
Author(s):  
Donatella Carretta ◽  
Anne Hervé-Minvielle ◽  
Victoria M Bajo ◽  
Alessandro E.P Villa ◽  
Eric M Rouiller

2021 ◽  
Author(s):  
Douglas R Ollerenshaw ◽  
Julianne Davis ◽  
Ethan G McBride ◽  
Andrew Shelton ◽  
Christof Koch ◽  
...  

AbstractThe claustrum is uniquely positioned to communicate with almost all higher-order cortical areas through widespread and reciprocal anatomical projections, yet the in vivo functional properties of claustrum neurons are not well understood. Here we use microendoscope imaging in mice to measure activity in populations of genetically-labelled Gnb4+ claustrum neurons. We find that only a small fraction of cells in the anterior claustrum are responsive to visual or auditory stimuli when delivered under passive yet wakeful conditions. In contrast, during a visual behavioral task, the majority of cells in the anterior claustrum are strongly modulated, with separate and spatially intermingled cell populations showing either increases or decreases in activity relative to spontaneous levels. Our results suggest that the Gnb4+ cells in the anterior claustrum do not represent passively presented sensory stimuli; rather, these cells are strongly engaged during behavior associated with sensory-motor transformations.


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