Cognitive Psychology Commons^™

A Combined Fmri And Dti Examination Of Functional Language Lateralization And Arcuate Fasciculus Structure: Effects Of Degree Versus Direction Of Hand Preference Author Links Open Overlay Panel, Ruth E. Propper, Lauren J. O'Donnell, Stephen Whalen, Yanmei Tie, Isaiah Norton, Ralph O. Suarez, Lilla Zollei, Alireza Radmanesh, Alexandra Golby

Ruth Propper

The present study examined the relationship between hand preference degree and direction, functional language lateralization in Broca’s and Wernicke’s areas, and structural measures of the arcuate fasciculus. Results revealed an effect of degree of hand preference on arcuate fasciculus structure, such that consistently-handed individuals, regardless of the direction of hand preference, demonstrated the most asymmetric arcuate fasciculus, with larger left versus right arcuate, as measured by DTI. Functional language lateralization in Wernicke’s area, measured via fMRI, was related to arcuate fasciculus volume in consistent-left-handers only, and only in people who were not right hemisphere lateralized for language; given the …

Telling Stories Without Words, Kristin Andrews

Kristin Andrews, PhD

I will argue here that we can take a functional approach to FP that identifies it with the practice of explaining behaviour -- that is, we can understand folk psychology as having the purpose of explaining behaviour and promoting social cohesion by making others’ behaviour comprehensible, without thinking that this ability must be limited to those with linguistic abilities. One reason for thinking that language must be implicated in FP explanations arises from the history of theorizing about the nature of scientific explanation. I will show that there are other models of explanation that are free from the metaphysical linguistic …

Memory Performance Is Related To Language Dominance As Determined By The Intracarotid Amobarbital Procedure, S. Kovac, G. Möddel, J. Reinholz, A. Alexopoulosa, T. Syed, S. Schuele, Tara Lineweaver, T. Loddenkemper

Tara T. Lineweaver

Objective

The goal of this study was to explore the relationship between language and memory lateralization in patients with epilepsy undergoing the intracarotid amobarbital procedure.

Methods

In 386 patients, language lateralization and memory lateralization as determined by laterality index (LI) were correlated with each other.

Results

Language lateralization and memory lateralization were positively correlated (r = 0.34, P < 0.01). Correlations differed depending on the presence and type of lesion (χ² = 7.98, P < 0.05). LIs correlated significantly higher (z = 2.82, P < 0.05) in patients with cortical dysplasia (n = 41, r = 0.61, P < 0.01) compared with the group without lesions (n = 90, r = 0.16, P > 0.05), with patients with hippocampal sclerosis falling between these two groups. Both memory (P < 0.01) and language (P …