Absolute threshold - Study guides, Class notes & Summaries

PY 101 Exam 2 Question and answers verified to pass PY 101 Exam 2 absolute threshold The level of intensity that lifts a stimulus over the threshold of conscious awareness; it's usually defined as the intensity level at which people can detect the pressure of the stimulus 50% of the time accommodation the process through which the lens changes its shape temporarily to help focus light on the retina affordance Recognizing opportunities for behavior through perception bas...

Question 1 1 / 1 pts Which of these is not a characteristic of an action potential? Each normal action potential for a given cell type looks identical, depolarizes to the same potential, and repolarizes back to the same resting potential. An action potential at one site causes depolarization at adjacent sites, bringing those adjacent sites to threshold. If an excitable cell is depolarized to threshold in a normal manner, then the occurrence of an action potential is inevitable. On the...

AQA A level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023. (There are) stretch-mediated sodium ion channels (in the membrane); 2. (Increased pressure) deforms/changes (sensory neurone/axon) membrane/lamella(e) OR (Increased pressure) deforms/changes sodium ion channels; 3. Sodium ion channels open; 4. Sodium ions diffuse in; 5. Depolarisation (leading to generator potential); 3 max (3 x AO1) 1. 2. 3. or 4. Accept Na+ Max 2 if only reference to sodium and not sodium ions 4. Accep...

sensation - how sensory receptors receive and represent stimulus energies from the environment Perception - how we organize and interpret the sensory information, drawing meaning from the world around us neuron - a cell that conducts electrochemical signals and is the basic unit of the nervous system synesthesia - stimulation of one sense triggers another (feeling colors) Interneurons (association neurons) - neurons that carry messages from motor to sensory nerves myelin sheath - prevents ...

ANP 1105 Comprehensive Midterm Exam #1 || All Questions & Solutions (100% Verified – Rated A+) ANP 1105 Comprehensive Midterm Exam #1 || All Questions & Solutions (100% Verified – Rated A+) Tropomyosin serves as a contraction inhibitor by blocking the myosin binding sites on the actin molecules - ANSWER-What is the role of tropomyosin in skeletal muscles? A. Tropomyosin is the name of a contracting unit B. Tropomyosin serves as a contraction inhibitor by blocking the myosin binding sit...

The JND is a constant fraction of the stimulus. - ️️•JND / I = K I= intensity of the standard K = a constant that is characteristic of the task ("Weber fraction") conditions: - ️️-cataract - an opaque (or less transparent) area in the lens•some caused by UV in sunlight; common in aged•cured by removing lens, use glasses instead (but...) perception - ️️conscious experience of objects and their relationships (resulting from psychological processes in which meaning, r...

PSY 120 - Exam 2 Purdue Questions with complete solution 2024 PSY 120 - Exam 2 Purdue transduction - correct answer conversion from sensory stimulus energy to action potential absolute threshold - correct answer the minimum stimulation needed to detect a particular stimulus 50% of the time subliminal messages - correct answer stimuli below our absolute threshold just noticeable difference (JND) or difference threshold - correct answer the minimal change in a stimulus that can j...

LSU PSYCH 2000 EXAM 1 (TUCKER) QUESTIONS WITH ALL CORRECT ANSWERS – UPDATED!! Trichromatic Theory - Answer-Primary Colors: Red, Blue, Green Evidence: Color Blindness Opponent Process Theory - Answer-Primary Colors: Red-Green, Blue-Yellow Evidence: Afterimages Physical Dimension - Answer-Amplitude Frequency Complexity Perceptual Dimension - Answer-Loudness Pitch Timbre Quiet and High Pitch - Answer-Low Amplitude, High Frequency Quiet and Deeper Pitch - Answer-Low Amplitude...

ISYE 6501 - Midterm 2 Questions and Answers 100% Correct when might overfitting occur when the # of factors is close to or larger than the # of data points causing the model to potentially fit too closely to random effects Why are simple models better than complex ones less data is required; less chance of insignificant factors and easier to interpret what is forward selection we select the best new factor and see if it's good enough (R^2, AIC, or p-value) add it to our model and fit the mod...

AP PSYCHOLOGY REVIEW, AP PSYCH TEST COMPLETE WITH ANSWERS ablation ANSWER = removal or destruction of brain tissue in a surgical procedure absolute threshold ANSWER = intensity level at which one can detect a stimulus 50% of the time accommodation ANSWER = the process of modifying a schema to account for new information; the process of the eyes lens changing shape in order to focus on distant or near objects acetylcholine (ACh) ANSWER = a neurotransmitter involved in learning, memory a...