Titlebook: Sensory Coding in the Mammalian Nervous System; George Somjen Book 1972 Springer-Verlag US 1972 brain.cortex.development.information.medic

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The Central Code of Hearing precise. Moreover the ‘volleying’ of neurons in third- and higher-order neurons in the auditory nuclei of the brain stem, seems to be optimal during relaxed inattentiveness of the subject and to become less strict when the animal is alerted to the sound stimulus. Spatial information related to the

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The Central Code of Sightneurons of the visual pathway have receptive fields organized into excitatory and inhibitory zones. Between lateral geniculates and the cortex two changes take place: one is the predominance of binocular convergence in the cortex, and the other is the change of the shape of the optimal stimulus from

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Photoreceptorssion, where cells come in two kinds: light-detector and shade-detectors; however, the discussion of neuronal processes of the retina belongs to the province of the central code, and will follow in Chapter 14. A description of the trichromatic theory of color vision is, properly, given here.

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Direct Contact with the World mechanoreceptive fibers further subdivisions have been discerned. Whether or not thermoreceptors fall into two categories, cold-sensitive and warm-sensitive, is in dispute, but the weight of evidence seems to fall in favor of the notion that there indeed are two categories of temperature sensors.

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The External Chemical Sensesot resolved. If such exist, the question is whether individual receptor cells each contain a mixture of several specialized ‘receptor molecules’ in varying proportions. If there are no ‘fundamental’ stimuli of taste and of smell then some alternative scheme of the relatedness of sapid and odoriferous stimuli must be found.

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Central Coding in the Somatic Sensesneurons which respond to either the movement or the position of joints; the neurons of the spinothalamic pathways are entirely concerned with crude (‘protopathic’) information, have large receptive fields, and are not modality-specific; some of the cells of origin of the spinothalamic pathways in th

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The Central Code of Sightd in the visual cortex of all mammals where they have been sought, and in greater abundance in the superior colliculi of the midbrain. In the primary visual cortex there are, beside the simple-field cells the so-called ‘complex cells’ or ‘tilt-detectors.’ In the peristriate area no simple cells are