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Reference frames for planning reach movement in the parietal and premotor cortices

Bahareh Taghizadeh
Doctoral thesis
Date of Examination: 2015-02-17
Date of issue: 2016-02-16
Advisor: Gail, Alexander Prof. Dr.
Referee: Scherberger, Hansjörg Prof.
Referee: Wörgötter, Florentin Prof. Dr.
Referee: Treue, Stefan Prof. Dr.

Persistent Address: http://hdl.handle.net/11858/00-1735-0000-0028-86C4-2

 

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Abstract

English

Human and nonhuman primates are able to plan and execute goal-directed behavior and flexibly respond to their surrounding stimuli. Their ability to adapt to changes in their environment is a crucial factor for their survival. Primates use their hands to reach to objects, grasp and manipulate them. Planning a goal-directed hand reaching movement towards an object is a distributed task that engages many cortical and subcortical areas in primate's brain, prior and during the reaching movement. This work addresses planning goal-directed reach movements in human and nonhuman primates. More specifically, the present thesis investigates different representations of spatial parameters, namely egocentric and allocentric, which are required for planning a reach movement towards an object.
Keywords: goal-directed reach movement; parietal cortex; premotor cortex; extracellular recordings; sensorimotor transformation; reference frame; egocentric; allocentric; size encoding; spatial encoding; dynamic spatial selectivity; flexible encoding; electrophysiology
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