Structural Connectivity in Different Types of Reward Among Youth: A combined fMRI and DTI study
Poster No:
2362
Submission Type:
Abstract Submission
Authors:
Siti Mariam Roslan1, Asma Hayati Ahmad2, Aini Ismafairus Abd Hamid2
Institutions:
1Universiti Sains Malaysia, Kubang Kerian, Kelantan, 2Universiti Sains Malaysia, Kubang Kerian, Malaysia
First Author:
Co-Author(s):
Introduction:
Neuroimaging studies have identified brain areas involved in reward processing. However, the connectivity of different types of reward remains unclear. This study aims to determine the structural connectivity in different types of reward cues among young adults.
Methods:
Twenty right-handed students (11 males) with the mean age of 24±1 from School of Health Sciences, Universiti Sains Malaysia participated in this study. Participants underwent functional magnetic resonance imaging (fMRI) scan, while performing the 2-back tasks. Different cues (cash and filial) were displayed during the tasks. The participants remained inside the MRI scanner for diffusion MRI scan. Participants were divided into cash and filial groups based on their highest score during the 2-back tasks. Probabilistic tractography was performed to calculate the number of streamlines from the seed to targets. The seed was selected based on region-of-interests (ROI) extracted from random effects analysis (RFX) whereas the targets were selected based on previous literatures. The seed region was putamen, whereas ten targets were selected which included anterior cingulate cortex (ACC), posterior cingulate cortex (PCC), ventrolateral prefrontal cortex (VLPFC), amygdala, dorsolateral prefrontal cortex (DLPFC), anterior insula, and posterior insula.
Results:
The highest connection probability in filial group was observed between the right putamen to the right amygdala. Whereas in cash group, the highest connectivity was between the right putamen to the right anterior insula.
Conclusions:
Our findings suggest that differential structural connectivity exist in processing different rewards.
Emotion, Motivation and Social Neuroscience:
Reward and Punishment
Neuroanatomy, Physiology, Metabolism and Neurotransmission:
White Matter Anatomy, Fiber Pathways and Connectivity 2
Novel Imaging Acquisition Methods:
BOLD fMRI
Diffusion MRI 1
Physiology, Metabolism and Neurotransmission :
Neurophysiology of Imaging Signals
Keywords:
FUNCTIONAL MRI
STRUCTURAL MRI
WHITE MATTER IMAGING - DTI, HARDI, DSI, ETC
Other - Reward, Youth
1|2Indicates the priority used for review
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