Maladaptive Plasticity in Aphasia: Brain Activation Maps Underlying Verb Retrieval Errors

Table 5

Lateralization indexes related to maladaptive plasticity, that is, production of semantic paraphasia, and adaptive plasticity, that is, successful naming, for each participant. A lateralization index ranging from −0.25 to 0.25 represents a symmetric contribution of the left and right hemispheres to processing (participant 1), whereas a positive value indicates a predominant RH contribution to processing (participants 2 and 3) [29].

	Participant 1	Participant 2	Participant 3
Brain activation map for semantic paraphasia	−0.11	0.69	0.89
Brain activation map for successful naming	−0.21	0.76	0.36