BIOM20002 Lecture Notes - Lecture 13: Thalamus, Opsin, Ganglion Cell Layer
22 Aug 2018
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Lecture 13 - neuronal networks and selected networks. The structure of a sensor is usually specialized to optimize interaction with the specific stimulant. Specialized cell molecular change change in membrane potential action potential. Three types of stimulus receptors: free nerve endings simple receptors (they may have myelinated or unmyelinated axons, enclosed nerve endings (in connective tissues, specialized receptor cell. Sensory receptor variety sensors can be grouped based on the type of stimulus to which they are most sensitive. * all sensations are just trends of action potentials that, in isolation, would be hard to distinguish from each other. Location: which receptive fields are activated, the sensory regions of the cerebrum are highly organized with respect to incoming signals, and input from adjacent sensory receptors is processed in adjacent regions of the cortex. Intensity: cannot be calculated directly from a single sensory neuron actions because a single action potential is (cid:858)all-or-none(cid:859) event.
