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Behavioural effects of fronto-orbital lesions in dogs
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What do we remember? BEATE HERMELIN- - MRC Developmental Psychology Unit, Drayton House, Gordon
Street, London WC1 (Great Britain) Does the brain store information from the senses in a sensory specific manner, or are the data integrated and intercorrelated into more 'abstract' codes? Yet another possibility is that, irrespective of which senses have received information, it is transferred for further analyses to that sensory system which is best equipped to deal with it. A series of experiments, comparing normal with perceptually and cognitively impaired children, will be described. In some of these the results seemed to suggest sensory specific coding, where for instance sighted children changed their strategies when blindfolded and resembled blind children when solving spatial problems. In other situations they seemed to rely on visual reference systems for spatial organization. Similarly, hearing children treated much visually presented verbal information in terms of temporally ordered language codes, while deaf children made use of multidirectional spatial rather than unidirectional temporal structures. The result from the experiment gives little evidence for the equivalence of sensory data when making cognitive inferences or when remembering information.
Behavioural effects of fronto-orbital lesions in dogs A. TIELEN
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Institute of Medical Physics, TNO, Utrecht (The Netherlands)
Spinal cord lesions and defects in thermosensitivity in the cat ULF NORRSELL - - Department of Physiology, University of Gdteborg, G6teborg
(Sweden} The thermosensitivity of the paws of different cats has been examined before and/or after restricted uni- and/or bilateral transversal lesions were made in the first to fourth cervical segments of the spinal cord. The behavioural thermosensitivity was evaluated with a modified T-maze technique which permits testing of the paws on both sides, or on one side only1. The short and long time effects of various dorsal, ventral and ventrolateral lesions have been studied. It was found that lesions involving the dorsal funiculi bilaterally and the dorsal part of the lateral funiculus to the depth of the central canal on one side caused, possibly permanently, defects of thermosensitivity of the paws contralateral to the lateral funiculus lesions. No such defects were observed after lesions involving the dorsal funiculi alone, or the most dorsal parts of the lateral funiculi alone, or the ventral third of the spinal cord alone.
What do we remember? BEATE HERMELIN- - MRC Developmental Psychology Unit, Drayton House, Gordon
Street, London WC1 (Great Britain) Does the brain store information from the senses in a sensory specific manner, or are the data integrated and intercorrelated into more 'abstract' codes? Yet another possibility is that, irrespective of which senses have received information, it is transferred for further analyses to that sensory system which is best equipped to deal with it. A series of experiments, comparing normal with perceptually and cognitively impaired children, will be described. In some of these the results seemed to suggest sensory specific coding, where for instance sighted children changed their strategies when blindfolded and resembled blind children when solving spatial problems. In other situations they seemed to rely on visual reference systems for spatial organization. Similarly, hearing children treated much visually presented verbal information in terms of temporally ordered language codes, while deaf children made use of multidirectional spatial rather than unidirectional temporal structures. The result from the experiment gives little evidence for the equivalence of sensory data when making cognitive inferences or when remembering information.
Behavioural effects of fronto-orbital lesions in dogs A. TIELEN
-
-
Institute of Medical Physics, TNO, Utrecht (The Netherlands)
Spinal cord lesions and defects in thermosensitivity in the cat ULF NORRSELL - - Department of Physiology, University of Gdteborg, G6teborg
(Sweden} The thermosensitivity of the paws of different cats has been examined before and/or after restricted uni- and/or bilateral transversal lesions were made in the first to fourth cervical segments of the spinal cord. The behavioural thermosensitivity was evaluated with a modified T-maze technique which permits testing of the paws on both sides, or on one side only1. The short and long time effects of various dorsal, ventral and ventrolateral lesions have been studied. It was found that lesions involving the dorsal funiculi bilaterally and the dorsal part of the lateral funiculus to the depth of the central canal on one side caused, possibly permanently, defects of thermosensitivity of the paws contralateral to the lateral funiculus lesions. No such defects were observed after lesions involving the dorsal funiculi alone, or the most dorsal parts of the lateral funiculi alone, or the ventral third of the spinal cord alone.