Change detection in the surrounding world : evidence from visual and somatosensory brain responses
Change detection is crucial for our daily lives. There are two research traditions for change detection: (1) change detection that investigates changes between two successively presented pictures with a time interval inserted, for which attention is considered necessary; and (2) deviance detection, which refers to the detection of changes that violate certain regularities in serially presented stimuli and can be conducted in an unattended condition. In Study I, I reviewed contradictory results from studies that applied attentive visual search and change detection tasks to study emotional bias in the perception of facial expressions. Three possible contributing factors that have significant impacts on the contradictory results were proposed, namely, differences in stimuli, differences in experimental settings, and differences in underlying cognitive processes. In Studies II and III, using magnetoencephalography, I investigated deviance detection in regularity formed by serially presented facial expressions and the location of electrical pulses. In Study II, I investigated to what extent the automatic encoding and change detection of paracentrally presented facial expressions is altered in dysphoria. The brain responses demonstrated that with both happy and sad faces, changes could be detected automatically. However, dysphoric individuals exhibited a negative perceptual bias toward sad faces in addition to a general deficit in the pre-attentive deviance detection processing. In Study III, a novel oddball task was introduced to investigate brain responses to unpredictable and predictable rare somatosensory events. The results showed that rare stimuli elicited two main brain activity components in the primary and secondary somatosensory areas contralateral to the stimulation. However, the results linked only the earlier component, at 30‒100 ms after stimulus onset, to the prediction error signals. The results of Study III also highlighted the need to disentangle the effects of stimulus rareness and predictability in future studies. Overall, this dissertation brings together two relatively separate but related research domains of change detection. In addition to reviewing evidence of change detection, this dissertation provides empirical evidence of deviance detection in both the visual and somatosensory modalities and raises suggestions for future research on both types of change detection.
...
Publisher
Jyväskylän yliopistoISBN
978-951-39-8791-6ISSN Search the Publication Forum
2489-9003Contains publications
- Artikkeli I: Xu, Q., Ye, C., Gu, S., Hu, Z., Lei, Y., Li, X., Huang, L., & Liu, Q. (2021). Negative and Positive Bias for Emotional Faces : Evidence from the Attention and Working Memory Paradigms. Neural Plasticity, 2021, Article 8851066. DOI: 10.1155/2021/8851066
- Artikkeli II: Xu, Q., Ruohonen, E., Ye, C., Li, X., Kreegipuu, K., Stefanics, G., Luo, W., & Astikainen, P. (2018). Automatic Processing of Changes in Facial Emotions in Dysphoria : A Magnetoencephalography Study. Frontiers in Human Neuroscience, 12, Article 186. DOI: 10.3389/fnhum.2018.00186
- Artikkeli III: Xu, Q., Ye, C., Hämäläinen, J. A., Ruohonen, E. M., Li, X., & Astikainen, P. (2021). Magnetoencephalography Responses to Unpredictable and Predictable Rare Somatosensory Stimuli in Healthy Adult Humans. Frontiers in Human Neuroscience, 15, Article 641273. DOI: 10.3389/fnhum.2021.641273
Metadata
Show full item recordCollections
- JYU Dissertations [862]
- Väitöskirjat [3589]
License
Related items
Showing items with similar title or keywords.
-
Depression-related alterations in deviance detection ERPs in the auditory and somatosensory modality
Topal, Volkan; Louhisto, Kasper (2022)Automaattisilla sähköfysiologisilla aivovasteilla mitatut kuulo- ja tuntoärsykemuutokset ovat potentiaalisia työkaluja masennuksen hermostollisten merkkien tunnistamiseksi. Kyseiset vasteet ovat kuitenkin saaneet osakseen ... -
Somatosensory change detection in young healthy twin males
Pekkola, Elina (2013) -
Somatosensory Deviance Detection ERPs and Their Relationship to Analogous Auditory ERPs and Interoceptive Accuracy
Kangas, Elina S.; Vuoriainen, Elisa; Li, Xueqiao; Lyyra, Pessi; Astikainen, Piia (Hogrefe Publishing Group, 2022)Automatic deviance detection has been widely explored in terms of mismatch responses (mismatch negativity or mismatch response) and P3a components of event-related potentials (ERPs) under a predictive coding framework; ... -
Somatosensory change detection in the aging brain
Strömmer, Juho (2011)The study examined the brain’s automatic somatosensory change detection mechanism using event-related potentials (ERPs) to tactile electrical pulses to fingers in an oddball paradigm. Also the effects of aging to these ... -
Magnetoencephalography reveals impaired sensory gating and change detection in older adults in the somatosensory system
Pesonen, Heidi; Strömmer, Juho; Li, Xueqiao; Parkkari, Jari; Tarkka, Ina M.; Astikainen, Piia (Elsevier, 2023)Brain electrophysiological responses can provide information about age-related decline in sensory-cognitive functions with high temporal accuracy. Studies have revealed impairments in early sensory gating and pre-attentive ...