Search results for "Sensory"

Pusaudžu izvairīgas/ierobežojošas pārtikas uzņemšanas traucējuma iezīmju, sensorā jutīguma un internalizētu uzvedības problēmu sakarības

2022

Darba mērķis ir izpētīt ARFID iezīmju, sensorā jutīguma un internalizēto uzvedības problēmu sakarības pusaudžiem. Pētījumā piedalījās 271 pusaudzis 14 – 18 gadu vecumā. Pētījumā tika izmantotas trīs aptaujas – Deviņu jautājumu ARFID aptauja, Īpaši jutīga bērna aptauja, Ahenbaha jaunieša uzvedības pašnovērtēšanas aptaujas internalizēto uzvedības problēmu skalas. Rezultāti parādīja, ka pastāv statistiski nozīmīgas pozitīvas saistības starp pusaudžu ARFID iezīmēm, sensoro jutīgumu un internalizētām uzvedības problēmām. Meitenēm tika novērotas izteiktākas ARFID iezīmes, sensorais jutīgums un internalizētas uzvedības problēmas nekā zēniem. Internalizētas uzvedības problēmu kopējie rādītāji progn…

Somatosensory change detection in young healthy twin males

2013

Automatic auditory and somatosensory brain responses in relation to cognitive abilities and physical fitness in older adults

2017

AbstractIn normal ageing, structural and functional changes in the brain lead to an altered processing of sensory stimuli and to changes in cognitive functions. The link between changes in sensory processing and cognition is not well understood, but physical fitness is suggested to be beneficial for both. We recorded event-related potentials to somatosensory and auditory stimuli in a passive change detection paradigm from 81 older and 38 young women and investigated their associations with cognitive performance. In older adults also associations to physical fitness were studied. The somatosensory mismatch response was attenuated in older adults and it associated with executive functions. So…

Rats with elevated genetic risk for metabolic syndrome exhibit cognitive deficiencies when young

2021

Metabolic syndrome (MetS) is a known risk factor for cognitive decline. Using polygenic rat models selectively bred for high and low intrinsic exercise capacity and simultaneously modelling as low and high innate risk factor for MetS respectively, we have previously shown that adult animals with lower exercise capacity/higher MetS risk perform poorly in tasks requiring flexible cognition. However, it is not known whether these deficits in cognition are present already at young age. Also, it is unclear whether the high risk genome is related also to lower-level cognition, such as sensory gating measured as prepulse inhibition. In this study, young and adult (5-8 weeks and ∼9 months) rats sel…

Cognition in Interaction : Challenges in Assessing Persons with Sensory and Multiple disabilities

2021

This article reports a qualitative study of cognitive assessments of three teenagers with sensory and multiple disabilities, including moderate to profound developmental disability. The aim was to evaluate the possibilities for adapting standardized tests and the implementation of interactional partnership in assessment. Cognitive assessments were made with an individually-adapted psychological assessment tool, the Bayley Scales of Infant and Toddler Development. The assessment situations were video-recorded and analyzed based on sociocultural theories of early interaction, dynamic assessment, and the bodily-tactile modality of cognition. The results showed that the requirements for assessm…

On Photometric Analog Computers for Statistical Purposes

1959

Cartesian Psychology – Could There Be One?

2008

The chapter examines what it would mean to talk about “psychology” in Descartes’ terms and argues that within the Cartesian framework we cannot really formulate the questions that are posed by contemporary psychologists. This results from the fact that psychological topics can be found on all three levels of Cartesian science: in metaphysics, in physics and finally in the applied sciences, such as medicine and morals. The aim is to show that the sensory and vegetative functions are often taken together by Descartes. Therefore, the Cartesian system does not recognize any principal difference between sensory functions, such as vision, and vegetative functions, such as digestion. Humans can be…

Mismatch negativity (MMN) in freely-moving rats with several experimental controls.

2014

Mismatch negativity (MMN) is a scalp-recorded electrical potential that occurs in humans in response to an auditory stimulus that defies previously established patterns of regularity. MMN amplitude is reduced in people with schizophrenia. In this study, we aimed to develop a robust and replicable rat model of MMN, as a platform for a more thorough understanding of the neurobiology underlying MMN. One of the major concerns for animal models of MMN is whether the rodent brain is capable of producing a human-like MMN, which is not a consequence of neural adaptation to repetitive stimuli. We therefore tested several methods that have been used to control for adaptation and differential exogenou…

Might as well jump: Sound affects muscle activation in skateboarding

2014

The aim of the study is to reveal the role of sound in action anticipation and performance, and to test whether the level of precision in action planning and execution is related to the level of sensorimotor skills and experience that listeners possess about a specific action. Individuals ranging from 18 to 75 years of age - some of them without any skills in skateboarding and others experts in this sport - were compared in their ability to anticipate and simulate a skateboarding jump by listening to the sound it produces. Only skaters were able to modulate the forces underfoot and to apply muscle synergies that closely resembled the ones that a skater would use if actually jumping on a ska…

Fear of falling and coexisting sensory difficulties as predictors of mobility decline in older women

2012

Background. Mobility decline, the coexistence of several sensory difficulties and fear of falling (FOF) are all common concerns in older people; however, knowledge about the combined effect of FOF and coexisting sensory difficulties on mobility is lacking. Methods. Data on self-reported FOF, difficulties in hearing, vision, balance, and walking 2 km were gathered with a structured questionnaire among 434 women aged 63–76 years at baseline and after a 3-year follow-up. Logistic regression models were used for analyses. Results. Every third participant reported difficulties in walking 2 km at baseline. In cross-sectional analysis, the odds ratio for difficulties in walking 2 km was higher amo…