TY  - CONF
AU  - Stanković, Marija
AU  - Bjekić, Jovana
AU  - Teovanović, P.
AU  - Konstantinović, Uroš
AU  - Paunović, Dunja
AU  - Đukić, Bojana
AU  - Filipović, Saša
PY  - 2023
UR  - http://rimi.imi.bg.ac.rs/handle/123456789/1445
AB  - Gambling represents a reward-based activity that many people engage in for fun and leisure. However, excessive gambling may lead to Gambling Disorder (GD), the most prevalent behavioural addiction. There is evidence that neural circuits behind some of the cognitive processes that drive GD can be modulated by Transcranial Electrical Stimulation (tES). To comprehensively understand the potential of tES in targeting cognitive mechanisms implicated in GD, we conducted a PRISMA-guided systematic review of studies that applied tES to modulate gambling-related cognitive processes in a diverse range of population samples, including healthy participants, participants with GD, as well as other addictions. Most of the studies used transcranial direct current stimulation (tDCS) to target dorsolateral prefrontal cortex (DLPFC). While 70% of studies showed neuromodulatory effects, the results varied considerably depending on the stimulation parameters, sample characteristics, as well as outcome measures used. We noticed that studies predominantly focused on the DLPFC without providing a clear rationale, even though other brain regions have shown greater relevance to the cognitive functions affected in GD. Furthermore, we have identified a gap in the existing literature regarding the use of tES among participants with gambling-related issues. Based on these findings, we propose a study protocol for investigating the effects of tES on cognitive functions affected in GD, in a sample of at-risk gamblers. In a sham-controlled, parallel-group study we will use multichannel tDCS to modulate the activity of anterior cingulate cortex, due to its key role in gambling-related cognitive processes. The electrode montage will be optimized based on current flow modeling. We will test the effects on cognitive tasks measuring risk-taking, impulsivity, inhibition, and decision-making. In addition to at risk-gamblers, we will sample control participants with no gambling-related issues. This approach will enable us to examine whether and how this factor may determine the responsiveness to tES.
C3  - BrainBox Initiative Conference 2023, 21-23 September 2023, London, UK, 2023
T1  - Using Transcranial Electrical Stimulation to modulate gambling-related cognitive functions: A systematic review and study protocol
UR  - https://hdl.handle.net/21.15107/rcub_rimi_1445
ER  - 

@conference{
author = "Stanković, Marija and Bjekić, Jovana and Teovanović, P. and Konstantinović, Uroš and Paunović, Dunja and Đukić, Bojana and Filipović, Saša",
year = "2023",
abstract = "Gambling represents a reward-based activity that many people engage in for fun and leisure. However, excessive gambling may lead to Gambling Disorder (GD), the most prevalent behavioural addiction. There is evidence that neural circuits behind some of the cognitive processes that drive GD can be modulated by Transcranial Electrical Stimulation (tES). To comprehensively understand the potential of tES in targeting cognitive mechanisms implicated in GD, we conducted a PRISMA-guided systematic review of studies that applied tES to modulate gambling-related cognitive processes in a diverse range of population samples, including healthy participants, participants with GD, as well as other addictions. Most of the studies used transcranial direct current stimulation (tDCS) to target dorsolateral prefrontal cortex (DLPFC). While 70% of studies showed neuromodulatory effects, the results varied considerably depending on the stimulation parameters, sample characteristics, as well as outcome measures used. We noticed that studies predominantly focused on the DLPFC without providing a clear rationale, even though other brain regions have shown greater relevance to the cognitive functions affected in GD. Furthermore, we have identified a gap in the existing literature regarding the use of tES among participants with gambling-related issues. Based on these findings, we propose a study protocol for investigating the effects of tES on cognitive functions affected in GD, in a sample of at-risk gamblers. In a sham-controlled, parallel-group study we will use multichannel tDCS to modulate the activity of anterior cingulate cortex, due to its key role in gambling-related cognitive processes. The electrode montage will be optimized based on current flow modeling. We will test the effects on cognitive tasks measuring risk-taking, impulsivity, inhibition, and decision-making. In addition to at risk-gamblers, we will sample control participants with no gambling-related issues. This approach will enable us to examine whether and how this factor may determine the responsiveness to tES.",
journal = "BrainBox Initiative Conference 2023, 21-23 September 2023, London, UK, 2023",
title = "Using Transcranial Electrical Stimulation to modulate gambling-related cognitive functions: A systematic review and study protocol",
url = "https://hdl.handle.net/21.15107/rcub_rimi_1445"
}

Stanković, M., Bjekić, J., Teovanović, P., Konstantinović, U., Paunović, D., Đukić, B.,& Filipović, S.. (2023). Using Transcranial Electrical Stimulation to modulate gambling-related cognitive functions: A systematic review and study protocol. in BrainBox Initiative Conference 2023, 21-23 September 2023, London, UK, 2023.
https://hdl.handle.net/21.15107/rcub_rimi_1445

Stanković M, Bjekić J, Teovanović P, Konstantinović U, Paunović D, Đukić B, Filipović S. Using Transcranial Electrical Stimulation to modulate gambling-related cognitive functions: A systematic review and study protocol. in BrainBox Initiative Conference 2023, 21-23 September 2023, London, UK, 2023. 2023;.
https://hdl.handle.net/21.15107/rcub_rimi_1445 .

Stanković, Marija, Bjekić, Jovana, Teovanović, P., Konstantinović, Uroš, Paunović, Dunja, Đukić, Bojana, Filipović, Saša, "Using Transcranial Electrical Stimulation to modulate gambling-related cognitive functions: A systematic review and study protocol" in BrainBox Initiative Conference 2023, 21-23 September 2023, London, UK, 2023 (2023),
https://hdl.handle.net/21.15107/rcub_rimi_1445 .

TY  - JOUR
AU  - Bjekić, Jovana
AU  - Živanović, Marko
AU  - Paunović, Dunja
AU  - Vulić, Katarina
AU  - Konstantinović, Uroš
AU  - Filipović, Saša
PY  - 2022
UR  - http://rimi.imi.bg.ac.rs/handle/123456789/1230
AB  - Associative memory (AM) is the ability to remember the relationship between previously unrelated items. AM is significantly affected by normal aging and neurodegenerative conditions, thus there is a growing interest in applying non-invasive brain stimulation (NIBS) techniques for AM enhancement. A growing body of studies identifies posterior parietal cortex (PPC) as the most promising cortical target for both transcranial magnetic stimulation (TMS) and transcranial electrical stimulation (tES) to modulate a cortico-hippocampal network that underlines AM. In that sense, theta frequency oscillatory tES protocols, targeted towards the hallmark oscillatory activity within the cortico-hippocampal network, are increasingly coming to prominence. To increase precision and effectiveness, the need for EEG guided individualization of the tES protocols is proposed. Here, we present the study protocol in which two types of personalized oscillatory tES–transcranial alternating current stimulation (tACS) and oscillatory transcranial direct current stimulation (otDCS), both frequency-modulated to the individual theta-band frequency (ITF), are compared to the non-oscillatory transcranial direct current stimulation (tDCS) and to the sham stimulation. The study has cross-over design with four tES conditions (tACS, otDCS, tDCS, sham), and the comprehensive set of neurophysiological (resting state EEG and AM-evoked EEG) and behavioral outcomes, including AM tasks (short-term associative memory, face–word, face–object, object-location), as well as measures of other cognitive functions (cognitive control, verbal fluency, and working memory).
T2  - Brain Sciences
T1  - Personalized Frequency Modulated Transcranial Electrical Stimulation for Associative Memory Enhancement
IS  - 4
SP  - 472
VL  - 12
DO  - 10.3390/brainsci12040472
ER  - 

@article{
author = "Bjekić, Jovana and Živanović, Marko and Paunović, Dunja and Vulić, Katarina and Konstantinović, Uroš and Filipović, Saša",
year = "2022",
abstract = "Associative memory (AM) is the ability to remember the relationship between previously unrelated items. AM is significantly affected by normal aging and neurodegenerative conditions, thus there is a growing interest in applying non-invasive brain stimulation (NIBS) techniques for AM enhancement. A growing body of studies identifies posterior parietal cortex (PPC) as the most promising cortical target for both transcranial magnetic stimulation (TMS) and transcranial electrical stimulation (tES) to modulate a cortico-hippocampal network that underlines AM. In that sense, theta frequency oscillatory tES protocols, targeted towards the hallmark oscillatory activity within the cortico-hippocampal network, are increasingly coming to prominence. To increase precision and effectiveness, the need for EEG guided individualization of the tES protocols is proposed. Here, we present the study protocol in which two types of personalized oscillatory tES–transcranial alternating current stimulation (tACS) and oscillatory transcranial direct current stimulation (otDCS), both frequency-modulated to the individual theta-band frequency (ITF), are compared to the non-oscillatory transcranial direct current stimulation (tDCS) and to the sham stimulation. The study has cross-over design with four tES conditions (tACS, otDCS, tDCS, sham), and the comprehensive set of neurophysiological (resting state EEG and AM-evoked EEG) and behavioral outcomes, including AM tasks (short-term associative memory, face–word, face–object, object-location), as well as measures of other cognitive functions (cognitive control, verbal fluency, and working memory).",
journal = "Brain Sciences",
title = "Personalized Frequency Modulated Transcranial Electrical Stimulation for Associative Memory Enhancement",
number = "4",
pages = "472",
volume = "12",
doi = "10.3390/brainsci12040472"
}

Bjekić, J., Živanović, M., Paunović, D., Vulić, K., Konstantinović, U.,& Filipović, S.. (2022). Personalized Frequency Modulated Transcranial Electrical Stimulation for Associative Memory Enhancement. in Brain Sciences, 12(4), 472.
https://doi.org/10.3390/brainsci12040472

Bjekić J, Živanović M, Paunović D, Vulić K, Konstantinović U, Filipović S. Personalized Frequency Modulated Transcranial Electrical Stimulation for Associative Memory Enhancement. in Brain Sciences. 2022;12(4):472.
doi:10.3390/brainsci12040472 .

Bjekić, Jovana, Živanović, Marko, Paunović, Dunja, Vulić, Katarina, Konstantinović, Uroš, Filipović, Saša, "Personalized Frequency Modulated Transcranial Electrical Stimulation for Associative Memory Enhancement" in Brain Sciences, 12, no. 4 (2022):472,
https://doi.org/10.3390/brainsci12040472 . .

TY  - JOUR
AU  - Živanović, Marko
AU  - Bjekić, Jovana
AU  - Konstantinović, Uroš
AU  - Filipović, Saša
PY  - 2022
UR  - http://rimi.imi.bg.ac.rs/handle/123456789/1254
AB  - Associative memory (AM) is the ability to remember and retrieve multiple items bound together. Previous studies aiming to modulate AM by various transcranial electric stimulation (tES) techniques were inconclusive, although overall suggestive that tES could be a tool for AM enhancement. However, evidence from a direct comparison between different tES techniques is lacking. Here, in a sham-controlled cross-over experiment, we comparatively assessed the effects of three types of tES—anodal tDCS, theta-band transcranial alternating current stimulation (tACS), and theta-oscillatory tDCS (otDCS), delivered over the left posterior parietal cortex, during a short-term digit-color AM task with cued-recall. The effects were tested in 40 healthy young participants while both oscillatory tES were delivered at a previously determined individual theta frequency (4–8 Hz). All three active stimulations facilitated the overall AM performance, and no differences could be detected between them on direct comparison. However, unlike tDCS, the effects of which appeared to stem mainly from the facilitation of low-memory demand trials, both theta-modulated tACS and otDCS primarily promoted AM in high memory demand trials. Comparable yet differential effects of tDCS, theta tACS, and otDCS could be attributed to differences in their presumed modes of action.
PB  - Springer Nature
T2  - Scientific Reports
T1  - Effects of online parietal transcranial electric stimulation on associative memory: a direct comparison between tDCS, theta tACS, and theta-oscillatory tDCS
IS  - 1
SP  - 14091
VL  - 12
DO  - 10.1038/s41598-022-18376-5
ER  - 

@article{
author = "Živanović, Marko and Bjekić, Jovana and Konstantinović, Uroš and Filipović, Saša",
year = "2022",
abstract = "Associative memory (AM) is the ability to remember and retrieve multiple items bound together. Previous studies aiming to modulate AM by various transcranial electric stimulation (tES) techniques were inconclusive, although overall suggestive that tES could be a tool for AM enhancement. However, evidence from a direct comparison between different tES techniques is lacking. Here, in a sham-controlled cross-over experiment, we comparatively assessed the effects of three types of tES—anodal tDCS, theta-band transcranial alternating current stimulation (tACS), and theta-oscillatory tDCS (otDCS), delivered over the left posterior parietal cortex, during a short-term digit-color AM task with cued-recall. The effects were tested in 40 healthy young participants while both oscillatory tES were delivered at a previously determined individual theta frequency (4–8 Hz). All three active stimulations facilitated the overall AM performance, and no differences could be detected between them on direct comparison. However, unlike tDCS, the effects of which appeared to stem mainly from the facilitation of low-memory demand trials, both theta-modulated tACS and otDCS primarily promoted AM in high memory demand trials. Comparable yet differential effects of tDCS, theta tACS, and otDCS could be attributed to differences in their presumed modes of action.",
publisher = "Springer Nature",
journal = "Scientific Reports",
title = "Effects of online parietal transcranial electric stimulation on associative memory: a direct comparison between tDCS, theta tACS, and theta-oscillatory tDCS",
number = "1",
pages = "14091",
volume = "12",
doi = "10.1038/s41598-022-18376-5"
}

Živanović, M., Bjekić, J., Konstantinović, U.,& Filipović, S.. (2022). Effects of online parietal transcranial electric stimulation on associative memory: a direct comparison between tDCS, theta tACS, and theta-oscillatory tDCS. in Scientific Reports
Springer Nature., 12(1), 14091.
https://doi.org/10.1038/s41598-022-18376-5

Živanović M, Bjekić J, Konstantinović U, Filipović S. Effects of online parietal transcranial electric stimulation on associative memory: a direct comparison between tDCS, theta tACS, and theta-oscillatory tDCS. in Scientific Reports. 2022;12(1):14091.
doi:10.1038/s41598-022-18376-5 .

Živanović, Marko, Bjekić, Jovana, Konstantinović, Uroš, Filipović, Saša, "Effects of online parietal transcranial electric stimulation on associative memory: a direct comparison between tDCS, theta tACS, and theta-oscillatory tDCS" in Scientific Reports, 12, no. 1 (2022):14091,
https://doi.org/10.1038/s41598-022-18376-5 . .

TY  - JOUR
AU  - Hadžiahmetović, Nina
AU  - Konstantinović, Uroš
AU  - Purić, Danka
PY  - 2021
UR  - http://rimi.imi.bg.ac.rs/handle/123456789/1222
AB  - The purpose of this study was to test a belief-bias effect on reasoning in relation to inhibitory control functions and whether inhibition would be activated on conflict syllogisms. A total of 85 university students (78 % women, Mage = 20. 51, SD = 2. 90) participated in the study. We measured three types of inhibition and used the Brown-Peterson task and the Cued Recall task to measure proactive interference resistance, the Eriksen flanker letters and arrows task to measure distractor interference control, and the Spatial and Numerical Stroop task to measure prepotent response inhibition. We administered a syllogistic reasoning task containing no-conflict and conflict syllogisms saturated by socially relevant content. We found a typical belief-bias effect on invalid/believable conflict syllogisms, and accordingly all three types of inhibition accounted for reasoning performance only on valid/unbelievable conflict syllogisms, where belief-bias was not registered, indicating an inverse relation of bias and inhibition.
T2  - Studia Psychologica
T1  - Is Inhibitory Control Related to Conflict in Reasoning: A Preliminary Study
EP  - 368
IS  - 4
SP  - 352
VL  - 63
DO  - 10.31577/sp.2021.04.832
ER  - 

@article{
author = "Hadžiahmetović, Nina and Konstantinović, Uroš and Purić, Danka",
year = "2021",
abstract = "The purpose of this study was to test a belief-bias effect on reasoning in relation to inhibitory control functions and whether inhibition would be activated on conflict syllogisms. A total of 85 university students (78 % women, Mage = 20. 51, SD = 2. 90) participated in the study. We measured three types of inhibition and used the Brown-Peterson task and the Cued Recall task to measure proactive interference resistance, the Eriksen flanker letters and arrows task to measure distractor interference control, and the Spatial and Numerical Stroop task to measure prepotent response inhibition. We administered a syllogistic reasoning task containing no-conflict and conflict syllogisms saturated by socially relevant content. We found a typical belief-bias effect on invalid/believable conflict syllogisms, and accordingly all three types of inhibition accounted for reasoning performance only on valid/unbelievable conflict syllogisms, where belief-bias was not registered, indicating an inverse relation of bias and inhibition.",
journal = "Studia Psychologica",
title = "Is Inhibitory Control Related to Conflict in Reasoning: A Preliminary Study",
pages = "368-352",
number = "4",
volume = "63",
doi = "10.31577/sp.2021.04.832"
}

Hadžiahmetović, N., Konstantinović, U.,& Purić, D.. (2021). Is Inhibitory Control Related to Conflict in Reasoning: A Preliminary Study. in Studia Psychologica, 63(4), 352-368.
https://doi.org/10.31577/sp.2021.04.832

Hadžiahmetović N, Konstantinović U, Purić D. Is Inhibitory Control Related to Conflict in Reasoning: A Preliminary Study. in Studia Psychologica. 2021;63(4):352-368.
doi:10.31577/sp.2021.04.832 .

Hadžiahmetović, Nina, Konstantinović, Uroš, Purić, Danka, "Is Inhibitory Control Related to Conflict in Reasoning: A Preliminary Study" in Studia Psychologica, 63, no. 4 (2021):352-368,
https://doi.org/10.31577/sp.2021.04.832 . .