Graduate Program in Neuroscience - Master's degree
Recent Submissions
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Neurophysiological investigation of contrast ratio effects on metacontrast masking
(Bilkent University, 2021-08)Visual masking has been used as an investigative tool to understand the dynam-ics of sensory and perceptual processing. Given that masking can also cause aware and unaware visual conditions, it has also found applications ... -
Characterizing surround suppression in motion direction perception
(Bilkent University, 2021-06)Visual perception is often achieved by surround modulation mechanisms, which help us pool individual information in our visual field. This mechanism is also prominent in motion perception, namely motion discrimination. A ... -
Effects of aging on gene expression levels of inflammatory, cytoskeletal and microglial markers in the brain using the zebrafish (Danio Rerio) model organism
(Bilkent University, 2021-01)Age-related cognitive decline burdens the elderly population, limiting their abil-ity to socialize and be independent. To be able to develop proper treatments, healthy aging should be examined. Previous studies focusing ... -
Mineralocorticoid and glucocorticoid receptors as novel targets in breast and liver cancer therapies
(Bilkent University, 2020-12)Cell signaling is a complex phenomenon and is maintained through intertwined signal transmissions within and in-between the cells. Anti-cancer therapies are often challenged by this fact due to crosstalk-associated ... -
Spatial attention and paracontrast masking
(Bilkent University, 2021-01)Visual masking is a powerful methodological tool to investigate the dynamics of sensory processing associated with object visibility and identity. Previous paracontrast masking studies revealed three distinct components ... -
Investigating the effects of perceptual learning on the function and microstructure of the visual cortex
(Bilkent University, 2020-12)Perceptual learning is the long-term improvement of the ability to process sensory stimuli through experience. Although an extensively studied field, the mechanism and locus of plasticity underlying visual perceptual ... -
Analysis of differentially expressed genes in bipolar disorder: transcriptomic signature of adolescence and young adulthood in working memory-relared area
(Bilkent University, 2020-11)Bipolar disorder (BD) is a heritable severe illness. One of the indications of BD is working memory (WM) impairment which is a heritable cognitive trait. The aim of the current study is to identify the transcriptomic ... -
Dynamic alternative splicing events in the dorsolateral prefrontal cortex during adolescence-young adulthood period and implications for schizophrenia
(Bilkent University, 2020-11)Alternative splicing (AS) or differential exon usage (DEU) is a regular process after gene expression and it contributes to the diversity of the genome by generating multiple protein isoforms. According to recent studies, ... -
Effects of varying levels and differing durations of calorie restriction on cellular and synaptic proteins, as well as the inflammatory state of the female mouse brain
(Bilkent University, 2020-09)Aging is an inevitable and complicated process leading to functional decline. Regarding brain aging, cognitive decline takes place in multiple domains, including learning, memory, executive functions, motor coordination, ... -
Functional changes in the human cortex over the course of visual perceptual learning
(Bilkent University, 2020-03)In this study we assessed functional changes through visual perceptual learning with bisection discrimination task. Before learning, after third session of learning and after learning ended, behavioral threshold and fMRI ... -
Investigating the mechanisms of telomere maintenance in zebrafish tissues and human brain cancer cell lines
(Bilkent University, 2019-09)Telomeres are nucleoprotein complexes formed at each end of the chromosomes to protect these ends from deterioration. In each round of cellular division, telomeric sequences shorten due to the end replication problem of ... -
Age related alterations of adult neurogenesis and astrocytes in Zebrafish (Danio Rerio)
(Bilkent University, 2019-09)Brain aging is marked by a decline in cognitive abilities and associated with neurodegenerative disorders. In order to identify appropriate interventions to change the course of brain aging and age-related neurological ... -
Comparing the performance of humans and 3D-convolutional neural networks in material perception using dynamic cues
(Bilkent University, 2019-07)There are numerous studies on material perception in humans. Similarly, there are various deep neural network models that are trained to perform different visual tasks such as object recognition. However, the intersection ... -
Effect of visual stimuli with fearful emotional cue on population receptive field estimates
(Bilkent University, 2019-07)Previous studies showed that the content of stimulus might affect the results of population receptive field (pRF) estimation method [1, 2, 3]. In addition, emotion might modulate visual processing in humans by increasing ... -
Temporal and spatial nonlinearities in FMRI BOLD response in human primary visual cortex
(Bilkent University, 2019-07)It is generally assumed that fMRI BOLD response (i.e., functional magnetic resonance imaging blood-oxygen-level-dependent signal) is linear and time-invariant. In this study, we investigated spatial and temporal ... -
Mapping human visual cortex with population receptive field model: tuning FMRI and stimulus parameters, and exploring receptive field sizes
(Bilkent University, 2019-07)Human visual cortex has been studied extensively since blood oxygen-level dependent (BOLD) signal was discovered by magnetic resonance imaging (MRI) researchers in 1990's [1]. It was not long after that, the researchers ... -
Task difficulty and expertise mediate the effects of roving on perceptual performance
(Bilkent University, 2019-01)Experience-dependent improvement of perception, known as perceptual learning, is possible in the absence of feedback, but feedback enables faster progress as demonstrated by both unsupervised and supervised learning ... -
EEG correlates of audiovisual associations in motion perception
(Bilkent University, 2018-12)The process of associative learning has been considered to be one of the promising research areas in neuroscience to understand human perception, sensory plasticity, and multisensory integration that affects the way of ... -
Reciprocal influences of interpretation and attentional biases to health-related information
(Bilkent University, 2018-09)Cognitive processing biases to health-related information have been endorsed to be present in patients who are su ering from medical diseases. Attentional bias is one of the cognitive processes which facilitates the ... -
The role of contrast and size in motion perception: behavioral and neuroimaging study of center-surround interactions in primary visual cortex (V1) and middle temporal area (MT+)
(Bilkent University, 2018-09)Behavioral experiments have demonstrated that observers' ability to discriminate the drift direction of a grating improves as its size increases if the grating has a low contrast, and deteriorates if it has a high contrast ...
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