Preview

Change detection

Satisfactory Essays
Open Document
Open Document
310 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Change detection
10/14/2014
Change Detection Basic Question
Yes, it was harder for me to detect a change in the picture when it flickered because it was harder for me to maintain focus on the change I was supposed to be looking for. My data does support my evaluation since the proportion correct with the flicker was 63% and the no flicker the proportion correct was 100%.
The flicker condition is the appearance of a blank gray box or a mask in between pictures presented. The blank image swamps the local-motion signal that would typically be caused by a change but our attention is not affected by it, the mask prevents automatic detection of change. Change is detected by slower, higher-level process by searching the scene thoroughly until you find the changed object.
In the no flicker condition the type of search strategy commonly used is the search for the local-motion signal caused by change of object. With this type of strategy it is easy to detect change when it is occurring and when there is also no change. In the flicker condition the commonly used strategy is searching the scene, object by object until the change in object is found. Advanced Question
The reaction time reported is to show how long that it took to identify the change in object per photo. Difficulty between the conditions can be observed and examined by recording the reaction time of the experiment.
Flicker conditions are the same as the driving conditions stated above. Looking away from the road to look at something else is the same as seeing a scene then looking at a blank field followed by a different scene. You may not be able to notice the change right away due to response time and you might hit someone or another vehicle because of the change of scene.

You May Also Find These Documents Helpful

  • Satisfactory Essays

    NT2640 Final Review

    • 1061 Words
    • 5 Pages

    1. Cut-through frame processing by a switch allows the switch to discard frames that fail the FCS check.…

    • 1061 Words
    • 5 Pages
    Satisfactory Essays
  • Good Essays

    Film Techniques

    • 897 Words
    • 4 Pages

    Used to reveal feelings without dialogue or to focus the viewer’s eyes on specific details.…

    • 897 Words
    • 4 Pages
    Good Essays
  • Good Essays

    react the same way. The abrupt transitions build intensity in the viewer and also build…

    • 766 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Reation Time vs. Athleticism

    • 3706 Words
    • 15 Pages

    References: Akarsu, S., Caliskan, E., & Dane, S. (2009). Athletes have faster eye-hand visual reaction…

    • 3706 Words
    • 15 Pages
    Powerful Essays
  • Good Essays

    "Reaction time is the ability to respond quickly to a stimulus" ("About reaction time", 2012). Reaction time is very important in our day-to-day life, even though we don't always realize we are using it. Some examples are; seeing something falling and catching it, or dodging a ball that is coming towards you. There are two different types of reaction time; Simple, and Choice reaction time. "Simple reaction time is the time taken between a stimulus and movement." For example, a sprint start. Simple reaction time depends on nerve connections and, therefore cannot be improved. The other kind of reaction time, Choice reaction time, is the time taken between stimulus and action that requires a choice. Choice reaction time can be improved. Because of the fact Choice reaction time can be improved, this is what will be tested.…

    • 736 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Change Blindness Analysis

    • 627 Words
    • 3 Pages

    Simply put, attention is a tool by which certain sensory information is actively processed while the remainder is relatively ignored. While this allows for efficiency of perceptual processing, the selective nature of attention leads to a number of perceptual phenomena. One such phenomenon, as discussed by Simons & Ambinder (2005), is ‘change blindness’, i.e., the inability to detect change in a visual stimulus. Jensen et al. (2011) differentiate this from another phenomenon, ‘inattentional blindness’, in which an unexpected object is not detected within the field of view. Though both phenomena are fundamentally failings of visual awareness, each has its own set of cognitive influences and potential implications (Jensen et al., 2011). Moreover,…

    • 627 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Plot Twist

    • 960 Words
    • 4 Pages

    A flashing arrow is a metaphorical audiovisual cue used in films to bring some object or situation that will be referred later, or otherwise used in the advancement of plot, to the attention of the viewers.…

    • 960 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Abstract: We conducted two experiments aimed at learning data collection, presentation, interpretation, experimental uncertainties along with their propagation, writing of a scientific report, determination of perimeter, area of a standard printing paper sheet, and determining human reaction times – individual, group and class. Here are our results; perimeter, P=99.20+/-0.085 cm, area, A of the sheet = 605.19 +/- 1.056 cm2, my human reaction time, tR= 20.33+/- 2.036 seconds, my group average tR=0.19+/-0.09 second and our class average tR=0.18 +/- 0.91 second. Various publications provide this range of human reaction time for 15-45 year age group: 0.15-0.24 second. Most of us are closer to the age of 15 than to 45. Accordingly, my tR, for example (20.33+/- 2.036 second) falls about in the middle but this is ok because I am 23 so I will not fall in the lower portion of the time scale like other younger classmates. Similarly, our group (0.19+/-0.09 second) and class (0.18 +/- 0.91 second) times also fall nearer to 0.15 second, therefor also providing credit to our results. We propagate uncertainties introduced into data we collected by instruments. Any experimental results without uncertainties are considered bogus. Thus, knowledge of these and their propagation is important.…

    • 868 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Reaction Time

    • 1036 Words
    • 5 Pages

    Reaserch Question: To design on investigation into stimuli ( sight/sound ) that may affect reaction time ( time taken for a response to occur in reaction to a stimulus.)…

    • 1036 Words
    • 5 Pages
    Powerful Essays
  • Powerful Essays

    color, in place of the green glow just moments before. You select the state of…

    • 2501 Words
    • 11 Pages
    Powerful Essays
  • Good Essays

    found that not only were response times much smaller [97], but also the performance in periods of…

    • 379 Words
    • 2 Pages
    Good Essays
  • Good Essays

    * Make sure the signal timing of the computer system is within the specification of the monitor.…

    • 5865 Words
    • 24 Pages
    Good Essays
  • Good Essays

    Attentional involvement is gauged by noting how reaction time (RT) varies with the number of items in a visual display.…

    • 771 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Crappy Poo Poo

    • 798 Words
    • 4 Pages

    Avoid or secure hazards Selection of an aid that works Effective use of selected aid 1 1 1…

    • 798 Words
    • 4 Pages
    Satisfactory Essays
  • Powerful Essays

    Constructing An Audio Player

    • 3097 Words
    • 20 Pages

    instead of the binary on-off switching, our eyes act as “averagers” and the LED is perceived to have…

    • 3097 Words
    • 20 Pages
    Powerful Essays

Related Topics