BPK 205 Lecture 13: BPK 205 Notes Lecture 13

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 205
• Professor: Nadine Wicks

Document Summary

Differentiate between conscious vs subconscious perception: all senses start out with a receptor detecting a stimulus and sending a signal to/within. Discuss how sensory receptor cells act as transducers. Sensory thresholds threshold stimulus needs to be reached for receptor potential to produce intracellular response. Intracellular response ap firing (neuronal receptors) or neurotransmitter release (non- neuronal receptors) Neuronal and non-neuronal receptors: neuronal transduction occurs at the receptor end (free nerve endings for unmyelinated or layers of connective tissue enclosing nerve ending for myelinated aka. Pacinian corpuscle): non-neuronal stimulus on separate receptor cell neurotransmitter released on to primary sensory neuron through synaptic vesicles action potential initiated. Discuss how does the cns distinguish stimulus properties. Modality what kind is it? (light, touch, pain, etc. : labeled line coding = brain (cid:862)parti(cid:272)ular group of re(cid:272)eptors = spe(cid:272)ifi(cid:272) (cid:373)odalit(cid:455)(cid:863) Location where is it? (specific areas of cerebral cortex specific receptive fields)