sensation
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47 questions
| 🇬🇧 | 🇬🇧 |
| Transduction | Stimulus converted into nerve impulses |
| Absolute threshold | Lowest intensity of stimulus which can be detected 50% of the time |
| Signal detection theory | Factors that influence sensory detection |
| Difference threshold | Difference between two stimuli that can be detected 50% of the time |
| Weber's Law | Difference threshold directly proportional to magnitude of stimulus |
| Myopia | Shortsightedness |
| Hyperopia | Farsightedness |
| Fovea | Area in the centre of retina, packed with cones |
| Rods and cones connect to ... and ... cells | Bipolar; ganglion |
| Photopigments turn.... | Light waves into nerve impulses |
| Trichomatic theory | Any colour created through combination of red, green, blue |
| Young-Helmholtz trichomatic theory | Three colour receptors: green, blue, red |
| Ewald Hering opponent process theory | Blue-yellow |
| It has been found that opponent processing occurs not through ... activation but during ... activation | Ganglion cell; cone |
| Frequency | Number of wave cycles per second |
| Amplitude | Vertical size of the sound waves |
| Cochlea | Fluid filled tube in the inner ear |
| Basilar membrane | Sheet of tissue runs length of cochlea |
| Organs of corti | Sheet of tissue that rests on Basilar Membrane |
| Frequency theory of pitch perception | Sound waves are matched by nerve impulses |
| Place theory of pitch perception | Frequency dictates where wave peak |
| Conduction deafness | Problems with mechanical system that transmits sound waves to the cochlea |
| Nerve deafness | Damaged receptors within inner ear or auditory nerve |
| Gustation | Sense of taste |
| Olfaction | Sense of smell |
| Taste buds | Chemical receptors along the tongue |
| Taste buds respond to four quantities | Sweet, salty, sour, bitter |
| Olfactory receptors occupy... | Upper part of nasal cavity |
| Olfactory bulb | Forebrain structure above the nasal cavity |
| Pheromones | Chemical signals found in body scents |
| Menstrual synchrony | Women in close contact sometimes match menstrual cycles |
| Humans experience four types of touch sensations | Pressure, pain, warmth, cold |
| Phantom limb phenomenon | Feeling pain in amputated part of body |
| Gate theory | Opening and closing of gate mechanism determines level of pain |
| Endorphins | Block neuro-transmission of pain impulses from spinal cord to brain |
| Kinaesthesis | Feedback about joint movements and position |
| Vestibular sense | Sense of body orientation and equilibrium |
| Central control mechanism | Nerve impulses from brain can influence pain impulse spreading |
| Parvocellular pathway involves.... meanwhile the magnocellular pathway involves... | Colour and fine detail; motion and dim light |
| If i am struggling to hear someone speaking to me, i may use visual information of lip movement, this will help me, according to the.... | Principle of inverse effectiveness |