Vision, Senses, and Motor Control Worksheet PSY/340 Version 3 1 University of Phoenix Material Vision, Senses, and Motor Control Worksheet Label the different sections by filling in the blanks on the visual cortex diagram, and answer the following questions in a minimum of 50 words each. 1. What are the functions in visual processing of each of the major structures identified on the diagram? Include a brief summary of each function in your response. 1.
Stimuli’s are what transfers to the brain. The brain is dependent on neurotransmitters to send signals for one part of the brain to another part. The neurotransmitters are let go or released by nerve cells, which is what helps in carrying out cognitive functioning. When brain cells are damaged
It bends or refracts light rays entering the eyes. C. It is the site of attachment for the extraocular muscles. D. It helps to maintain the shape of the eye. Answer Key: B Question 2 of 20 1.0 Points The border between the transparent edge of the cornea and the white of the fibrous sclera is the: A. pupil. B. anterior chamber.
A) The key functions that are affected by dementia are vision, memory, hearing, language and learning, which the temporal lobe (bottom left front lobe of the brain) is responsible for. Decision making, problem solving, control of behaviour and emotions, which the frontal lobe (front lobe of the brain) is responsible for, can also be affected. Sensory information form the body, letter forming, putting things in order and spatial awareness, which the parietal lobe (middle top lobe of the brain) is responsible for, can also be affected. Processing information related to vision, which the occipital lobe (back lobe of the brain) is responsible for, can also be affected. Memory, attention, thought, senses and movement, which the cerebellum lobe (right at the bottom of the brain next to the brain stem) is responsible for, can also be affected.
The parietal lobe receives sensory input for the sense of touch. The Occipital lobe is used for vision. Lastly, the temporal lobe is used for the sense of hearing or other auditory words. C) The lobe that processes the words we here is would be the temporal lobe. D) The lobe that processes what we see is the occipital
• Sensory organs function as receptors and receive the stimuli, then it sends nerve impulses to the related effectors. 3. How does the brain use the senses to search/find stimuli in the environment? • Stimuli from the environment are transformed into neural signals which are then interpreted
- The occipital lobe. e) What lobe would process words that we speak? - The frontal lobe. 4. The brain and spinal cord comprise the __central__ nervous system.
Key functions affected by dementia are: distortion of the visual field, the perception of size, colour and shape of objects may not be recognised by the brain from what the eyes are actually seeing. Temporal lobe Located on the sides of the brain at about the same level as the ears. Key functions affected by dementia are: hearing, language, the formation of memories, recognising people and places. The Cerebellum Located at the base of the brain under the Occipital lobe. Key functions affected are balance and muscle co-ordination The Hippocampus Located in the temporal lobe of the brain.
Describe the optic nerve and its function. 13. Name the four kinds of light-sensitive receptors found in the retina. 14. Describe how the lens causes light to come to focus.
The lateral nucleus is concerned with detecting the direction from which the sound is coming, presumably by simply comparing the difference in intensities of the sound reaching the two ears and sending an appropriate signal to the auditory cortex to estimate the direction. The medial superior olivary nucleus, however, has a specific mechanism for detecting the time lag between acoustical signals entering the two ears. This nucleus contains large numbers of neurons that have two major dendrites, one projecting to the right and the other to the left. The acoustical signal from the right ear impinges on the right dendrite, and the signal from the left ear impinges on the left dendrite.The intensity of excitation of each neuron is highly sensitive to a specific time lag between the two acoustical signals from the two ears.The neurons near one border of the nucleus respond maximally to a short time lag, while those near the opposite border respond to a long time lag; those in between respond to intermediate time lags. Thus, a spatial pattern of neuronal stimulation develops in the medial superior olivary nucleus, with sound from directly in front of the head stimulating one set of olivary neurons maximally and sounds from different side angles stimulating other sets of neurons on opposite sides.