Researcher:
Akdoğan, Başak

Profile Picture
ORCID

Job Title

Master Student

First Name

Başak

Last Name

Akdoğan

Name

Name Variants

Akdoğan, Başak

Email Address

Birth Date

Filters

2016 - 20174

Advanced Search

Filter by

Settings

Researcher Of Publications: search.filters.isAuthorOfPublication.3d1fb93e-fe07-4368-949b-93a37bbde1ac

Search Results

Now showing 1 - 4 of 4
  • Placeholder
    PublicationMetadata only
    Aralık zamanlama: kuramsal ve deneysel yaklaşımlar
    (Türk Psikologlar Derneği, 2016) N/A; Department of Psychology; Akdoğan, Başak; Balcı, Fuat; Master Student; Faculty Member; Department of Psychology; Graduate School of Social Sciences and Humanities; College of Social Sciences and Humanities; N/A; 51269
    Interval timing ability enables us to keep track of intervals in the seconds-to-minutes range. Given that time is a fundamental dimension of natural life, it is not surprising that interval timing has a crucial role in numerous cognitive functions and everyday activities. Behavioral studies focusing on interval timing suggest that individuals of different species are able to use temporal information efficiently. It has been proposed that time perception and timing processes in humans and other animals have common neural mechanisms, and that timing behavior can be manifested with similar statistical properties across species. In the first part of this article, several theoretical approaches to interval timing that rely on an internal clock mechanism are discussed. After presenting the main assumptions of these models, various psychophysical procedures that are widely employed to investigate interval timing ability in humans and other animals are described. Finally, approaches to decision processes underlying timing performance observed in these procedures are discussed. / Aralık zamanlama yetimiz, saniye ve dakikaları içeren süreleri zamanlayabilmemizi sağlar. Zamanın doğal hayatın temel bir parçası olması sebebiyle, aralık zamanlama birçok bilişsel süreç ve günlük aktivitede önemli role sahiptir. Aralık zamanlama üzerine yapılan davranışsal çalışmalar, farklı canlı türlerindeki bireylerin zamansal bilgiyi etkin bir şekilde kullanabildiğini ortaya koymaktadır. İlintili olarak, insanlar ve diğer hayvanlarda zaman algısının ve zamanlama süreçlerinin temelinde ortak sinirsel mekanizmaların bulunduğu ve zamanlama davranışının farklı canlı türlerinde benzer istatistiksel özelliklerle gözlenebildiği önerilmektedir. Bu makalenin ilk bölümünde, aralık zamanlama işlevini açıklamak üzere geliştirilmiş, temelinde içsel saat mekanizmasını barındıran farklı kuramsal yaklaşımlar ele alınmaktadır. Aralık zamanlama modellerinin temel varsayımlarına yer verildikten sonra, insanlar ve diğer hayvanların süreleri zamanlayabilme yetilerini araştırmada kullanılan çeşitli psikofiziksel yöntemler tanıtılmaktadır. Son olarak, bu yöntemlerde gözlenen zamanlama performansının ortaya çıkmasında yer aldığı düşünülen karar süreçlerine yönelik analitik yaklaşımlar tartışılmaktadır.
  • Placeholder
    PublicationMetadata only
    The effects of payoff manipulations on temporal bisection performance
    (Elsevier Science Bv, 2016) N/A; Department of Psychology; Akdoğan, Başak; Balcı, Fuat; Master Student; Faculty Member; Department of Psychology; N/A; Koç University Research Center for Translational Medicine (KUTTAM) / Koç Üniversitesi Translasyonel Tıp Araştırma Merkezi (KUTTAM); Graduate School of Social Sciences and Humanities; College of Social Sciences and Humanities; N/A; 51269
    There is growing evidence that alterations in reward rates modify timing behavior demonstrating the role of motivational factors in interval timing behavior. This study aimed to investigate the effects of manipulations of rewards and penalties on temporal bisection performance in humans. Participants were trained to classify experienced time intervals as short or long based on the reference durations. Two groups of participants were tested under three different bias conditions in which either the relative reward magnitude or penalty associated with correct or incorrect categorizations of short and long reference durations was manipulated. Participants adapted their choice behavior (i.e., psychometric functions shifted) based on these payoff manipulations in directions predicted by reward maximization. The signal detection theory-based analysis of the data revealed that payoff contingencies affected the response bias parameter (B '') without altering participants' sensitivity (A') to temporal distances. Finally, the response time (RT) analysis showed that short categorization RTs increased, whereas long categorization RTs decreased as a function of stimulus durations. However, overall RTs did not exhibit any modulation in response to payoff manipulations. Takentogether, this study provides additional support for the effects of motivational variables on temporal decision-making. (C) 2016 Elsevier B.V. All rights reserved.
  • Placeholder
    PublicationMetadata only
    Stimulus probability effects on temporal bisection performance of mice (Mus musculus)
    (Springer Heidelberg, 2016) N/A; Department of Psychology; Akdoğan, Başak; Balcı, Fuat; Master Student; Faculty Member; Department of Psychology; Graduate School of Social Sciences and Humanities; College of Social Sciences and Humanities; N/A; 51269
    In the temporal bisection task, participants classify experienced stimulus durations as short or long based on their temporal similarity to previously learned reference durations. Temporal decision making in this task should be influenced by the experienced probabilities of the reference durations for adaptiveness. In this study, we tested the temporal bisection performance of mice (Mus musculus) under different short and long reference duration probability conditions implemented across two experimental phases. In Phase 1, the proportion of reference durations (compared to probe durations) was 0.5, whereas in Phase 2 it was increased to 0.8 to further examine the adjustment of choice behavior with more frequent reference duration presentations (under higher reinforcement rate). Our findings suggest that mice developed adaptive biases in their choice behaviors. These adjustments in choice behavior were nearly optimal as the mice maximized their gain to a great extent which required them to monitor stimulus probabilities as well as the level of variability in their temporal judgments. We further found that short but not long categorization response times were sensitive to stimulus probability manipulations, which in turn suggests an asymmetry between short and long categorizations. Finally, we investigated the latent decision processes underlying the bias manifested in subjects' choice behavior within the diffusion model framework. Our results revealed that probabilistic information influenced the starting point and the rate of evidence accumulation process. Overall, the stimulus probability effects on choice behavior were modulated by the reinforcement rate. Our findings illustrate that mice can adapt their temporal behaviors with respect to the probabilistic contingencies in the environment.
  • Placeholder
    PublicationMetadata only
    Are you early or late?: temporal error monitoring
    (Amer Psychological Assoc, 2017) N/A; Department of Psychology; Akdoğan, Başak; Balcı, Fuat; Master Student; Faculty Member; Department of Psychology; Graduate School of Social Sciences and Humanities; College of Social Sciences and Humanities; N/A; 51269
    Temporal judgments regarding a target interval typically produce a nearly normally distributed reproduction times centered on the target with substantial variance. This phenomenon indicates that the majority of our temporal judgments are deviations from the target times, which are assumed to originate from the underlying timing uncertainty. Although humans were found to adapt their decisions in response to timing uncertainty, we do not know if they can accurately judge the direction and degree of their temporal errors. In this study, we asked participants to reproduce durations as accurately as possible. After each reproduction, participants were asked to retrospectively rate their confidence in their temporal estimates and to judge if their response time was earlier or later than the target interval. The results revealed that human participants are aware of both the direction and magnitude of their timing errors, pointing at an informationally rich temporal error monitoring ability. We further show that a sequential diffusion process can account for the detection of direction of errors as well as the qualitative features of the relationship of objective temporal errors with subjective confidence ratings and associated response times.