Abstract # 93:

Scheduled for Thursday, June 18, 2015 06:00 PM-08:00 PM: (Cascade AJBCD) Poster Presentation


WORKING MEMORY IN ATELES GEOFFROYI: RESTING-STATE FMRI IN MEDIAL PREFRONTAL CORTEX.

D. Platas-Neri1, S. Hidalgo-Tobón2,3, B. de Celis Alonso4, F. Chico2 and J. Muñoz-Delgado5
1Universidad Autónoma del Estado de Morelos, Campus Sur, Av. 18 de Marzo No. 617 , Jojutla, Morelos 62900, USA, 2Hospital Infantil de México Federico Gómez, México, D. F., 3Universidad Autónoma Metropolitana, Iztapalapa, México D.F., 4Benemérita Universidad de Puebla, Puebla, México. , 5Instituto Nacional de Psiquiatría
line
     

Resting state functional images measured in absence of a task, aim at detecting low frequency fluctuations in the Blood Oxygen Level Dependent (BOLD) signals. Working memory involves the brain system that provides temporary storage and manipulation of the information necessary for complex cognitive tasks such as language comprehension, learning, and reasoning. Three healthy adult monkeys were used to acquire whole brain images (2 f, 1 m; 10.5 ± SD 2.5 years). All MRI studies were performed on a 3T scanner. To estimate functional connectivity, ICA was performed using GIFT and data was preprocessed. A group ICA was made with Z>3.39 out of 20 components were considered noise and eliminated after visual analysis. The remaining components were projected onto the corresponding T1 anatomical images. ICA analysis showed clusters of connected brain regions in the frontal area, prefrontal cortex, dorsal anterior cingulate and superior parietal cortex in spider monkeys. Analysis presents two of those components: executive Control and working memory networks. These two components combined were similar to the component found by Damoiseaux, in healthy adult humans. The memory skills of Ateles are reported to exceed those of other primates. Ateles also display complex foraging strategies as well as large social groups. The components observed in spider monkeys might be a result of their arboreal life form in a highly dynamic environment such as the rainforest.