Cortical region interactions and the functional role of apical dendrites

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The basal and distal apical dendrites ofpyramidal cells occupy distinct cortical layers and are targeted by axons originating in different cortical regions. Hence, apical and basal dendrites receive information from distinct sources. Physiological evidence suggests that this anatomically observed segregation ofinput sources may have functional significance. This possibility has been explored in various connectionist models that employ neurons with functionally distinct apical and basal compartments. A neuron in which separate sets ofinputs can be integrated independently has the potential to operate in a variety ofways not possible for the conventional neuron model, in which all inputs are treated equally. This article thus considers how functionally distinct apical and basal dendrites can contribute to the information-processing capacities of single neurons and, in particular, how information from different cortical regions could have disparate effects on neural activity and learning.
Original languageEnglish
Article numberN/A
Pages (from-to)219 - 228
Number of pages10
JournalBehavioral and Cognitive Neuroscience Reviews
Issue number3
Publication statusPublished - Sept 2002


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