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Description
Flashcards by Zsofi Dombi, updated more than 1 year ago
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Created by Zsofi Dombi
over 6 years ago
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| Question | Answer |
| Spatial Coding systems | 1. Allocentric - object-to-object 2. Egocentric - self-to-object |
| Allocentric | encodes infromation about one object with respect to other objects |
| Egocentric | represents the location of objects in space relative to the location of other objects |
| hemispatial neglect | a neurophysiological condition in which after damage to one hemisphere of the brain is sustained, a deficit in attention to and awareness of one seide of the field of vision is observed |
| Mort et al (2003) | - MRI to map lesions of 35 right-hemisphere patients who suffered either middle or posterior cerebral artery stroke - MCA: angular gyrus of inferior parietal lobe - PCA: parahippocampal region of medial temporal lobe |
| Halligan and Marshall (1998) | symptomatology of neglect: disconnection between brain mechanissm that are relatively specialized by local visual processing and global processing |
| Karnath et al (1997) | neglect acts with respect to different egocentric reference of frames - thus turning trunk to left improves perception - but no improvement with turning the head |
| colonic stimulation | able to temporarily improve the englect through partial reactivation of a vestibular network in the lesioned hemisphere which is part of a system that codes egocentric space |
| Bisiach & Luzatti (1978) | the Milan Square experiment |
| Andersen et al (1985) | recordings from single neurons from rhesus monkeys: the visual sensitivity of the retinotropic receptive fields changes systematically with the angle of gaze |
| Pouget & Driver (2000) | relationship between the physiology of monkey parietal neruons and neglect in human patients: - parietal regions include neurons with mostly contralateral space, but there are some ipsilaterl too - decreases monotonically - parietal loss or dysfunction of similar cells like in monkeys |
| Gottlieb et al (1998) | parietal neuron responses are modulated by attention LIP has little or no response to stimuli brought into their receptive field unless the stimuli were behaviourally significant |
| Burgess et al (2001) | VR study on memory for spatial conetxt of controlled but lifelike events - retrieval of spatial context: parahippocampal, right posterior parietal area |
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