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Abstract #2892

Activation in Thalamus Predicts State and Trait Anxiety: An FMRI Perspective of Attentional Control Theory

Shilpi Modi1, Manas K. Mandal2, Prabhjot Kaur1, Rajendra P. Tripathi1, Subash Khushu1

1Institute of Nuclear Medicine and Allied Sciences (INMAS), Delhi, India; 2Defence Institute of Psychological Research, Delhi, India

Anxiety impairs the inhibition function and hence, increased distractibility is found in anxious individuals compared with nonanxious ones. fMRI was carried out to map neural correlates for an attention task that required distracter inhibition. Individual differences in state and trait anxiety levels were regressed with individual BOLD activation patterns. Multiple regression analysis results indicate that the activation in thalamus predicted lower state anxiety and higher trait anxiety levels of subjects Results further suggest that different types of anxietystate or traitmay influence attention differently.

Keywords

acclimatization activated activation active activity affected alternating alto anatomical anatomy anxiety anxious arousal ascending asked attention attentional axis biasing bilateral bilaterally blink block brain button capitalized carried central cerebellum characters chosen clusters competition comprising consisted consulting control corrected correlation cortex cross device differently digits diverse elucidate emotion findings fixation frontal functional functions graded grip hand healthy help humans implicated individual inferior influence inhibition initial institute integration interaction inventory journal letters lobe lobule long making maps materials measures mediating moreover negative nineteen object paradigm parietal part patient performance poor positive post posterior predicted predicts presentation press processing products prompted psychological psychologists questionnaires randomly recorded regression rendered report reported representation response rest reticular sample samples saturation scanning sciences score scores screen selective self sensory sessions seven slices source specialized stimuli stream subject subjects suggesting superior suppressive system target task temporal thalamus theory thereby threshold toolbox towards trait trial trials types varied visual whole