Search results for "kognitiiviset prosessit"
showing 10 items of 83 documents
Three different approaches to cognitive fatigue in patients with a mild form of multiple sclerosis : objective cognitive, subjective cognitive and ne…
2017
Tämän tutkimuksen tarkoitus oli arvioida kognitiivista uupumusta lievää multippeli skleroosin (MS) muotoa sairastavilla potilailla kolmea eri lähestymistapaa käyttäen: objektiivista kognitiivista, subjektiivista kognitiivista ja neurofysiologista. Objektiivista kognitiivista uupumusta arvioitiin tarkkaavuuden ylläpitoa, reaktionopeutta ja työmuistia mittaavilla tehtävillä. Subjektiivista kognitiivista uupumusta sekä elämänlaatua arvioitiin itsearvioilla. Neurofysiologiset mittaukset käsittivät aivojen sähköiin herätevasteisiin perustuvia observaatioita. Mittareina olivat kontingentti negatiivinen variaatio (CNV) ja P3. Tutkimukseen osallistui 20 MS-tautia sairastavaa ja 20 verrallistettua t…
Electrophysiological evidence for the effectiveness of images versus text in warnings
2023
AbstractWarning sign plays an important role in risk avoidance. Many studies have found that images are better warnings than text, while others have revealed flaws of image-only warning signs. To better understand the factors underlying the effectiveness of different types of warning signs (image only, text only, or image and text), this study adopted event-related potential technology to explore the differences at the neurocognitive level using the oddball paradigm and the Go/No-go paradigm. Together, the behavioral and electroencephalogram results showed that text-only warnings had the lowest effectiveness, but there was little difference between the image-only and image-and-text warnings…
The Contribution of Event-Related Potentials to the Understanding of Sign Language Processing and Production in the Brain : Experimental Evidence and…
2022
Functional neuroimaging allows investigation of the timing properties of the brain mechanisms underlying covert language processing. This paper presents a review of the use of the neuroimaging technique called Event-Related Potentials (ERPs) in sign language (SL) research. In the field of neurolinguistics, ERPs have been widely used in the study of spoken language, but their use in SL is still rare. Studying the neurocognitive aspects of SL could lead to a better understanding of the specific processing of SL in the brain. This review outlines the basic theoretical and methodological principles of ERPs. We focus on three groups of ERPs that are particularly relevant to SL processing and pro…
A dynamic adjustment model of saccade lengths in reading for word-spaced orthographies : evidence from simulations and invisible boundary experiments
2021
Contemporary models of eye movement control in reading assume a discrete target word selection process preceding saccade length computation, while the selection itself is assumed to be driven by word identification processes. However, a potentially more parsimonious, dynamic adjustment view allows both next word length and its content (e.g. orthographic) to modulate saccade length in a continuous manner. Based on a recently proposed center-based saccade length account (a new regression model of forward saccade length is introduced and validated in a simulation study. Further, additional simulations and gaze-contingent invisible boundary experiments were used to study the cognitive mechanism…
Three Stages of Consumers’ Multi-Stage Dichotomic Switching Process Pre-Switch, switch, and post-switch
2021
This research examines why and how consumers switch their mobile phones. We propose a framework that is grounded on decision-making and motivational theories and draws on the findings from a multinational qualitative survey on consumers’ mobile phone switching process. We show that consumers’ pre-switching decisions are affected by push and pull factors, their mobile phone selections are based on utilitarian or hedonic values, and their justifications for switching are based on cognition or affect. Furthermore, we identify two archetypical routes (i.e., cognitive and affective routes) and three conjoint routes that explain the dichotomic switching processes in pre-switch, switch, and post-s…
Expertise and becoming conscious of something
2022
Becoming conscious refers to how new mental content emerges in the mind. To understand this phenomenon, we studied how people experience graffiti by thinking aloud. In protocols, we found three types of becoming conscious: experiencing emotional and perceptual content directly linked to a perceivable object, non-perceivable or apperceived information content, and transformation and restructuring processes. On the grounds of the content-based study of protocols, we suggest that people can become conscious of either direct perception, apperception, or restructuring thinking. Research of the mind, which is grounded in analysis and explained by properties of mental content, can be called conten…
Kestävyyskunnon ja kehonkoostumuksen vaikutus työmuistiin ja motoriseen nopeuteen
2014
Johanna Kautto (2014). Kestävyyskunnon ja kehonkoostumuksen vaikutus työmuistiin ja motoriseen nopeuteen. Terveystieteiden laitos, Jyväskylän yliopisto, liikuntalääketieteen pro gradu –tutkielma, 47 s., 6 liitettä. Kognitiiviset toiminnot muuttuvat ikääntyessä neuroanatomisista ja -fysiologisista muutoksista johtuen. Kognitiivisten toimintojen säilymiseen vaikuttavat terveydentila ja fyysinen aktiivisuus. Tutkimuksissa on ollut viitteitä siitä, että myös kehonkoostumuksella olisi vaikutusta kognitiivisiin toimintoihin. Tässä työssä selvitettiin kestävyyskunnon ja kehonkoostumuksen vaikutusta työmuistia ja motorista nopeutta arvioivista neuropsykologisista testeistä suoriutumiseen ikääntynei…
Segmentation boundaries in accelerometer data of arm motion induced by music : online computation and perceptual assessment
2022
Segmentation is a cognitive process involved in the understanding of information perceived through the senses. Likewise, the automatic segmentation of data captured by sensors may be used for the identification of patterns. This study is concerned with the segmentation of dancing motion captured by accelerometry and its possible applications, such as pattern learning and recognition, or gestural control of devices. To that effect, an automatic segmentation system was formulated and tested. Two participants were asked to ‘dance with one arm’ while their motion was measured by an accelerometer. The performances were recorded on video, and manually segmented by six annotators later. The annota…
Animal consciousness : Peter Olivi on cognitive functions of the sensitive soul
2009
Processing Mechanism of Chinese Verbal Jokes : Evidence from ERP and Neural Oscillations
2019
The cognitive processing mechanism of humor refers to how the system of neural circuitry and pathways in the brain deals with the incongruity in a humorous manner. The past research has revealed different stages and corresponding functional brain activities involved in humor-processing in terms of time and space dimensions, highlighting the effects of the time windows of about 400 ms, 600 ms, and 900 ms. However, much less is known about humor processing in light of the frequency dimension. A total of 36 Chinese participants were recruited in this experiment, with Chinese jokes, nonjokes, and nonsensical sentences used as the stimuli. The experimental results showed that there were signific…