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Abstract #2131

Differential Neural Activation in Field Dependent and Field Independent Subjects for a Camouflage Detection Task: An FMRI Study

Shilpi Modi1, Janani Rajagopalan2, Pawan Kumar1, Rajendra P. Tripathi1, Subash Khushu1, Manas K. Mandal2

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

An fMRI paradigm was designed to obtain the neural correlates of camouflage detection with real life photographs. The study accentuates on the comparative study between Field-dependent and Field-independent individuals in accordance to their neural correlates derived upon camouflage detection. A widespread activation of the dorsal stream of visual processing was obtained with a greater activation in field dependent subjects as compared to the field independent ones suggesting a greater effort required by them for task performance. However, additional recruitment of superior parietal, thalamic and cerebellar regions in field independent subjects might explain their capability to better perform the task.

Keywords

acclimatization accuracy activated activation active additional allow alternating among analytically anatomical anatomy array asked attention background beginning belonging better block bold brain called camouflage camouflaged carried categorical central cerebellar cerebellum chosen cluster clusters conditions consisted continuous coordinate correlation count dependent detect detecting detection differential difficult difficulty direct easy efficient either embedded experience explain exposed females field find frontal functional give greater grip healthy help identify implicated independent individuals inferior initial institute least lies life lobule location majority males materials might minus networks neural nuclear objects occipital offensively ones paradigm parietal part patient pattern peak perceiver performance photograph photographs picture pictures post presence prior processing products psychological rating real recorded recruitment representation required response reticular sample saturation scale scanning science sciences score search selection serve session since slices spatial statistically stimuli stimulus studies subject subjects suggest superior system table target task textures thalamus toolbox twenty uncorrected view visual whole widespread world years