Vpliv starosti na taktilno zaznavanje hitrosti

Popelar, Klara Manca (avtor), Georgiev, Dejan (mentor)

Aubert-Fleischlov fenomen (AFF) se nanaša na perceptivno izkušnjo, kjer se zdi, da se premikajoči dražljaj premika hitreje, ko je receptivni organ mirujoč, v primerjavi z dražljajem iste hitrosti, ki mu z receptivnim organom sledimo. Haptična zaznava se nanaša na čutilno zaznavanje informacij o predmetih in njihovih lastnostih z dotikom. Haptični AFF še ni raziskan v povezavi s staranjem. Cilj raziskave je bil opredeliti značilnosti haptičnega AFF v različnih starostnih skupinah zdravih preiskovancev. V študiji sta sodelovali dve skupini zdravih preiskovancev, in sicer 15 mlajših (stari 20–30 let) in 15 starejših (stari 55–65 let). V začetnem delu študije so preiskovanci rešili vprašalnike o kognitivnih sposobnostih, nato pa smo izvedli meritve za oceno bradihipokinezije (BRAIN-test) ter za oceno motenj percepcije časa (naloga sinhronizacije in nadaljevanja). V glavnem delu smo izvedli nalogo haptičnega AFF, kjer so preiskovanci morali oceniti hitrost premikajočega se pasu glede na referenčno hitrost s kinestetičnim (K) in s taktilnim (T) dražljajem. Vsebovala je 4 kombinacije obeh dražljajev (TT, KK, TK in KT). Preiskovanci med eksperimentom niso videli in slišali naprave, skupno je eksperiment trajal 3 ure. Rezultati testa za bradihipokinezijo so pokazali statistično pomembno razliko med skupinama pri oceni inkoordinacije za desno roko (p = 0,03), in sicer je imela starejša skupina slabšo koordinacijo od mlajše. Ni bilo statistično pomembnih razlik za druge parametre bradihipokinezije ter za test sinhronizacije in nadaljevanja. Pri nalogi haptičnega AFF smo potrdili obstoj fenomena v obeh skupinah, z minimalnimi razlikami med skupinama, ki pa niso bile statistično pomembne. Primerjali smo tudi parametre PSE (ang. point of subjective equality) in JND (ang. just noticeable difference), izračunana na podlagi polovic podatkov haptične naloge, ki so pokazali, da ne obstajajo razlike med prvo in drugo polovico testiranja, tako pri mlajših kot starejših. Izsledki študije bodo služili za boljše razumevanje haptičnega AFF, spreminjanje tega s starostjo in kot osnova za naslednje študije na tem področju.

• Jezik: Slovenski jezik
• Ključne besede: Aubert-Fleischlov fenomen, haptično zaznavanje, kinestezija, dotik, staranje, percepcija časa
• Vrsta gradiva: Magistrsko delo/naloga
• Tipologija: 2.09 - Magistrsko delo
• Organizacija: PEF - Pedagoška fakulteta
• Kraj izida: Ljubljana
• Založnik: K. M. Popelar
• Leto izida: 2024
• Št. strani: 57 str.
• PID: 20.500.12556/RUL-164578
• UDK: 616.895.4(043.2)
• COBISS.SI-ID: 213568003
• Datum objave v RUL: 02.11.2024

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: The effect of age on the tactile perception of speed

Izvleček

The Aubert-Fleischl phenomenon (AFF) refers to a perceptual experience where a moving stimulus appears to move faster when the receptive organ is at rest, compared to a stimulus of the same speed that is tracked by the receptive organ. Haptic perception pertains to the sensory perception of information about objects and their properties through touch. Haptic AFF has not been investigated in relation to aging. The aim of the study was to identify the characteristics of haptic AFF in different age groups of healthy participants. The study involved two groups of healthy participants: 15 younger adults (aged 20–30 years) and 15 older adults (aged 55−65 years). In the initial phase of the study, participants completed questionnaires about cognitive abilities, followed by measurements to assess brady-hypokinesia (BRAIN-test) and disturbances in time perception (synchronization continuation test). In the main part, a haptic AFF task was conducted, where participants had to estimate the speed of a moving strip relative to a reference speed using kinaesthetic (K) and tactile (T) stimuli. It included 4 combinations of both stimuli (TT, KK, TK, and KT). Participants were blindfolded and wore noise-cancelling headphones during the experiment, which lasted for a total of 3 hours. The results of the bradykinesia akinesia incoordination test showed a statistically significant difference between the groups in the assessment of incoordination for the right hand (p = 0.03), older group had a higher score meaning they had worse coordination, and no statistically significant differences for the other parameters and for the synchronization and continuation test. For the haptic AFF task, we confirmed the existence of the phenomenon in both groups, with minimal differences between the groups, which were not statistically significant. We also compared the parameters PSE (Point of Subjective Equality) and JND (Just Noticeable Difference), calculated based on the data halves of the haptic task, which showed that there were no differences between the first and second halves of testing, both in younger and older subjects. The findings of the study will serve to better understand haptic AFF, its changes with age, and as a basis for further studies in this area.

• Ključne besede: Aubert-Fleischl phenomenon, haptic perception, kinaesthesia, touch, aging, time perception