Neurophysiology Build & Use

EDIT: We used the Spiker Boxes today, with great success.

The great physiologist of the 19th and early 20th centuries all built their own amplifiers (and other equipment).  It was a rite of passage, and besides, they couldn’t simply purchase the equipment because it was not commercially available.

Albion believes in tradition. Our Honors Neurophysiology for Beginners students also build their equipment. For many it is their first experience in electronics; the end-products don’t always work, but we’re batting better than .500.  Here the students are building one- and two-channel Spiker Boxes from Backyard Brains.

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Playing with the Sky

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My new camera, an Olympus OM-D EM-10, offers a feature that makes it easy (OK, easier) to get great shots of star trails. Called “Live Composite,” the feature allows the camera to stack many repeated images into one. However, unlike a typical multiple exposure image, LiveComp adds to the image only pixels that have changed since the first exposure. This means that the original unchanging image does not become overexposed (the tree in the foreground retains its dark loomingness, the dark sky between stars remains dark); but as stars or other sources of light change position or appear, this new information is added to the image.

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I’m sure I’ll play more with this – looking forward to shots of the Hudson River and the NY City skyline at night, with boats and other traffic moving through – but for now enjoy my first star trail shots.

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Plagiarism: The Good, the Bad, and the Ugly

OK – Just joking. There is nothing good about plagiarism.

Source: http://visual.ly/did-i-plagiarize-types-and-severity-plagiarism-violations

Source: http://visual.ly/did-i-plagiarize-types-and-severity-plagiarism-violations

Here are some examples of plagiarism. If your paper contains one of these the most you will receive on the paper is 60% (that assumes that the paper contains something redeeming, contributed by you.

Melania Trump – Michelle Obama Example:

Michelle Obama’s speech:

“… Barack and I were raised with so many of the same values: that you work hard for what you want in life; that your word is your bond and you do what you say you’re going to do; that you treat people with dignity and respect, even if you don’t know them, and even if you don’t agree with them.  And Barack and I set out to build lives guided by these values, and pass them on to the next generation. Because we want our children — and all children in this nation — to know that the only limit to the height of your achievements is the reach of your dreams and your willingness to work for them.

Melania Trump’s speech:

“From a young age, my parents impressed on me the values that you work hard for what you want in life, that your word is your bond and you do what you say and keep your promise, that you treat people with respect.  They taught and showed me morals in their daily life. That is the lesson that I continue to pass along to our son. And we need to pass those lessons on to many generations to follow because we want our children in this nation to know that the only limit to your achievements is the strength of your dreams and your willingness to work for them.

Trump’s speech contains the same ideas, in the same order, with many of the same words and only minor rewriting.

Examples of Various types of Plagiarism

Original from Vurbic and Bouton (2011)

The relevant contemporary research has been conducted mainly in fear conditioning. In three conditioned suppression experiments reported by Richards and Sargent (1983), a modest secondary extinction effect was found in the first experiment but was not replicated in the subsequent two. Two other reports using the conditioned suppression preparation failed to demonstrate the secondary extinction effect. In two experiments, Bouton and King (1983) paired a tone and a light with a shock US in separate sessions and reported that extinction of the tone CS had no effect on suppression to the light CS when it was tested later. In three experiments, Kasprow, Schachtman, Cacheiro, and Miller (1984) likewise reported null results, using both lick suppression and leverpress suppression paradigms.

Nearly Verbatim Submitted Text:

The relevant contemporary research was conducted mainly in fear conditioning. In three conditioned suppression experiments, a modest secondary extinction effect was found in one experiment but was not replicated in the subsequent two. Two other reports using the conditioned suppression preparation failed to demonstrate the secondary extinction effect. In two experiments, Bouton and King (1983) paired a tone and a light with a shock US in separate sessions and found that extinction of the tone CS had no effect on suppression to the light CS when it was tested later.  Kasprow, Schachtman, Cacheiro, and Miller (1984) likewise reported null results, using both lick suppression and leverpress suppression paradigms.

Minor changes (mostly taking the form of omissions) occur. This would get you a grade of 0 on the paper, and notification would be sent to the Provost.

Submitted Text with Synonyms Substituted and some Re-Arrangement:

The relevant modern research looks at fear conditioning. In three conditioned suppression studies by Richards and Sargent (1983), a small secondary extinction effect was found in the first experiment but was not repeated in the later ones. Two other reports using the conditioned suppression preparation did not demonstrate the secondary extinction effect. In two experiments, Bouton and King (1983) paired a light and tone with a shock US in independent sessions. Results showed that extinction of the tone CS did not affect suppression to the light CS when it was later tested. In three experiments, Kasprow, Schachtman, Cacheiro, and Miller (1984) also found negative results, in both lick suppression and leverpress suppression procedures.

Synonyms are substituted for many words. This would get you a grade between 0 and 60 on the paper, and notification would be sent to the Provost.

Submitted Text with Same Ideas But Different Wording:

Now fear conditioning is studied.  Some evidence for a slight secondary extinction effect was demonstrated by Richards and Sargent (1983) in only one of three experiments on conditioned suppression. Also using conditioned suppression, Bouton and King (1983) found that extinction of one CS does not affect responses to a second CS. In lick suppression and leverpress suppression studies, Kasprow, Schachtman, Cacheiro, and Miller (1984) also failed to find support for secondary extinction.

This is Vurbic and Bouton’s paragraph, rewritten.  This would get you a grade between 0 and 60 on the paper, and depending on how much of your paper looked like this, maybe notification would be sent to the Provost.

 Appropriate use of information provided by Vurbic and Bouton:

Vurbic and Bouton (2011) discussed three published papers that, on the whole, suggest that secondary extinction is not common.  The studies used the conditioned suppression paradigms, common in studies of fear conditioning, and only rarely showed even slight evidence of secondary extinction.

Nothing wrong with this.  It conveys the relevant information without giving the impression that you reviewed the three papers and drew the conclusions.

Please be conscientious in your writing. If an idea or piece of knowledge was not yours, do not present it as if it was.

Vurbic, D., & Bouton, M. E. (2011). Secondary extinction in Pavlovian fear conditioning. Learning & Behavior, 39, 202-211.

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Where are they going? Plans of top Calhoun County High School Grads, 2016

Each spring the Battle Creek Enquirer publishes the names and college plans of the top high school graduates from each school in Calhoun County. Each year I summarize the students’ plans, mostly with an eye toward determining how well Albion College attracts these good students. The answer is: Not very well this year.

Of the 195 students listed in the paper, only 1 is coming to Albion. I know this student, and I can affirm that he is an excellent student – Albion will benefit from his presence. However, I can only wonder how much we might also benefit from the presence of more of these great students.

To be sure, only 13 of the 195 plan to attend liberal arts colleges; major universities (e.g., U of M, MSU, OSU), regional universities (e.g., WMU, GVSU, Trine), and community colleges are by far the most preferred destinations. But Albion should be able to attract more of those students aiming for the liberal arts, and should draw more of those headed for the other types of schools.

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Musings on Education

I’ve been teaching at the college level for a long time.  My first class was a statistics class taught to marriage and family counselling students (masters level) at Pepperdine University in 1984; since then I’ve taught exclusively at the undergraduate level at both state and private colleges. Here I address a change that I have noted in recent years.  I  believe that this reflects a sudden change–not a gradual shift.mnemonics

Students are far less willing now to take chances in the classroom. I routinely ask students to answer questions as we cover new material.  These questions require thought, guided by the material under discussion. The questions are not difficult; in many cases there are multiple possible answers that could be correct. The purpose is to get the students thinking.  Over the past two years or so, maybe even more recently than that, it has become clear that students are not willing to answer.

I don’t think that the reluctance is the result of ignorance, or fear of being wrong. Instead I believe that it reflects the students’ lack of experience with this kind of situation. K-12 education is so focused on standardized testing, on ensuring that students get the right answer, that students have not learned to think. Memorize facts, demonstrate that the material has been learned by answering multiple choice questions… that approach does not foster an ability to think. It does not foster an appreciation for the possibility that there are varied ways of thinking about a problem, or even that thought might be brought to bear in a productive way.

I am sad about this. I am sad not only because it impacts the students’ (and my) experience in the classroom, but also because it adversely affects their test performance.  My tests (and I am not alone in this among my colleagues) typically ask students to apply what they have learned. It is not enough to memorize material–they have to understand concepts. Students are less capable of doing this now compared to a few years ago. Many students have asked for study guides before exams; by this I now understand that they mean a list of facts that they need to know. I do not offer such guides, for two reasons. First: the guide would suggest to students that its content is all that they need to know; on my tests all the material that we have covered might serve as the basis for a question–how can I offer a study guide that includes everything that we have covered? And second: life does not offer study guides–students need to learn to filter, organize, and extract the relevant material for themselves.

Beyond that, I am sad because few of these students, if they cannot overcome this tendency to want to be given facts rather than to think, will succeed in positions where they are expected to synthesize material and generate original ideas. I tend to think of the next step for many of my students: graduate school. Until they learn to think, and recognize that answers are not always available, many of my students will face serious problems in graduate school. The few current students who are willing to think stand out as exceptional. That is unfortunate–they should all be willing to think.

And a final note to students:  If you have read this far, take heart! There is hope. Begin by asking questions. Ask your professor an absurd question related to the material under discussion. Listen to the answer; listen as s/he reasons away the absurdity and explains why the question is unanswerable (or ridiculous – depends on the professor). You will learn from this.  You will see the thought process in action, and you will overcome your hesitancy to ask questions. Over time you will recognize that you, too, could probably have offered that response. Realize that you are capable of thought, despite not being encouraged to do it in the past. And you will learn.

 

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“Wisdoids” from Dick Thompson

At the 2015 Pavlovian Society meeting in Portland, OR we honored the memory of Dick Thompson, who had died one year earlier. Ted Berger (USC), who had worked with Dick, offered a list of what he called “wisdoids” that he thought had guided Dick’s work and life. Good advice – I thought I should share them.thompsonwisdoids

See Thompson’s Google Scholar citations here.

11950444_926385115003_536873470409616527_o (1)
11145233_926385100033_8757878482478694365_o 12030424_926385075083_7516618340180417436_o

========================================================================

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Bathroom Wars

Edit, 4/12/16: OK – I’m even angrier now. Michigan’s Dept of Education is considering mostly reasonable guidelines suggesting how schools deal with transgender kids. A conservative state legislator is introducing legislation to preempt this.  It “would require Michigan students to only use bathrooms and locker rooms matching their birth gender.” [All quotes in the edit are from the legislator’s web page.]  The legislator’s expertise in issues related to gender? Well, he “worked for 27 years in his family’s log trucking business” and has won numerous awards from the lumber and timber industry (… what would Freud say?).  Seriously, gender is determined by the brain, not the genitals, and nobody is checking the gender of the brain at birth. And the brain has almost certainly settled on its gender at birth. So let people be guided by their brains, and do not judge them based on their genitals.  No, I should say, “Do not judge them.”

=============================

I’m getting angry about the so-called “bathroom laws” that are currently in the news and being considered or enacted by various state legislatures. I recognize that some parents might be concerned for the physical and psychological well-being of their children, who must be protected from all realities of life that differ from the cocooned existence that mommy and daddy have provided. OK, I recognize this, but don’t accept it as valid—little Johnny and Susie need to learn that not everyone is like them; or in many cases, little Johnny and Susie need to learn that their own struggle with the gender to which you have assigned them is real and is shared by others.

Photo Credit, Serene Lau, Innovation Storyteller, Garfield Innovation Center

Photo Credit, Serene Lau, Innovation Storyteller, Garfield Innovation Center

But what really pisses me off (that metaphor seems appropriate in this context) is that the state legislators are clueless about the biology of sex and gender. The result is laws that are ambiguous or meaningless, and that will open the door to many easy challenges in the hands of reasonably intelligent attorneys. Let’s take a look at a few (my source for much of the information about the laws is a USA Today piece published in our local paper on 2/28/2016):

  • South Dakota’s law says that students must use the bathroom or locker room corresponding to their “chromosomes and anatomy” at birth.
  • Virginia’s proposed law requires that bathrooms and locker rooms be used by people “whose anatomical sex matches” the gender designation of the facility.
  • Oklahoma’s law would require use of a facility that matches a student’s gender at birth.

Here are some of the problems with these approaches:

  • Chromosomes are not the deteminants of gender or biological sex. You probably learned in high school biology class that females have XX sex chromosomes and males have XY. Typically true, but not always. The gene that pushes the developing mammal’s gonads to be testes rather than ovaries is usually on the Y chromosome, but this gene can jump to the X. The result is an organism in every way male except that he has XX chromosomes. Conversely, the XY individual can lack the cellular receptors for androgens, resulting in an organism that is in every way female except that she has testes and XY chromosomes.
  • What is meant by “anatomical sex” or “anatomy at birth?” Almost certainly what the law-makers mean is the appearance of the genitals: penis, it’s a boy; no penis, it’s a girl. However, the genitals don’t determine one’s gender. Maybe the legislators mean the sex of the brain: more cells in the Sexually Dimorphic Nucleus of the preoptic area in males; more estrogen receptors in the ventromedial hypothalamus in females. These anatomical features are much more likely to be responsible for gender than are the external genitalia. Or perhaps the law-makers were referring to whether the Mullerian or Wolffian system had developed (not terribly important to gender as far as we know).
  • And to refer to “gender at birth” is problematic. One’s gender identity might well be established at birth (psychologists are still working this out) but is most typically described psychologically (and appropriately) as “one’s sense of oneself as male, female, or transgender” (American Psychological Association, 2006)—this clearly cannot be determined at birth, before the person is verbal and can thus report a sense of self.
Via University of Bristol LGBT+ Society, http://lgbtplusbristol.org.uk , source URL: http://lgbtplusbristol.org.uk/wp-content/uploads/2012/08/image1.jpg , see: http://epigram.org.uk/2014/11/transgender-bathroom-signs-at-bristol-uni-go-viral/

Via University of Bristol LGBT+ Society

I would love to see an attorney challenge a law that specifies bathroom use based on chromosomes by asking a school how they know that the chromosomes of the students using a facility match the “gender” of the facility. Were chromosome tests done on all of the kids? Or in the case that anatomy must match the “gender designation of the facility,” ask a school if they have determined that the brain anatomy of the students using a particular restroom is more typically male or female, and how they know. Or are school officials simply checking the genitals of the kids before they let them pee?

I can’t offer a solution that will appease those who confuse genitals with gender.  And I can understand some level of discomfort—I felt it myself when a female (I should probably say “an apparently female”) attendant cleaned the urinal next to the one I was using in Poland. But the reality is that gender is not black-and-white (or male-and-female), and we must stop forcing people into behavior that does not align with their sense of self.

Let’s either allow people to select the bathroom that matches their gender identity or do away with segregated facilities and allow anyone to use any bathroom. This will not be a problem if we all treat each other with respect, or in the words so valued by many who are opposed to a less genitally-based view of the world, “Do unto others….”

#WeNeedToPee

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Free Papers via a Pirate Website

scihub

Sci-Hub offers free access to more than 47,000,000 scientific papers. Many of these papers are not readily available to the public for free. Should we use this self-described pirate website or not?

I’m a strong supporter of free and open-source software, and I think that scientific journals should be open-access.  I have no doubt that I will use Sci-Hub, but I remain uncertain about whether such use is morally supportable. Is it theft to access published articles that are locked behind pay-walls? Consider this question with the certain knowledge that if you lived near the right library you could get the paper for free, or that if you contacted the author s/he would gladly send you a copy (with some presumed delay).

Science relies on information. The information in many (probably most) of these papers was derived through studies funded by public money. Should the information thus be publicly available?  I see this as the direction that scientific publishing is taking; in 20 years, maybe sooner, all articles will be freely available. Until then, should sites like Sci-Hub be tolerated, encouraged, or shut down? Email me with your thoughts on this (wjwilson AT albion DOT edu) or comment on this post on my Facebook page (www.facebook.com SLASH jeff.wilson.33234).

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January, 2016: Welcome Back

I reprise an earlier post that seems appropriate. Follow the link to some guidelines for success as a student (and in life).

purity

 

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Dishonesty in a Scientific Film

I’m a science geek.  I love films about science, and am especially fond of old films related to psychology and neuroscience. Today I was reminded of a segment from Zimbardo’s 1990 Discovering Psychology series in which Dick Thompson explains his research.  Thompson very nicely explains his discovery of a region of the cerebellum where the memory responsible for eyeblink conditioning resides. In rewatching it, I noticed something — the computer trace illustrating the lack of a conditioned eyeblink after the interpositus nucleus had been lesioned looked oddly familiar.  Sure enough, it was the same trace that had been used 40 seconds earlier to represent the absence of a conditioned blink before learning had occurred. Sadly, and for reasons that we can only imagine, the produce of the film chose to reuse the pre-learning trace rather than showing the actual post-lesion trace that Thompson was describing. My conclusion that this was a decision of the producer and not a deception of the part of Thompson is based on two factors: 1) while we hear Thompson’s voice describing the post-lesion trace, we do not see his finger pointing at the features that he describes (something that he had done as he presented the pre-learning and CR traces); and 2) Dick was a friend whom I knew to be totally honest and above-board with regard to his science.PreTraceDuplicte

Lesions of the interpositus do, as Thompson described, eliminate the memory of the learning, and prevent future eyeblink conditioning. It is unfortunate that the reuse of the pre-lesion image might raise doubts about this conclusion in the minds of scientifically curious (and especially observant) people who do not know this literature. Science is based on the honest and free exchange of information; film-making is based on entertainment, and honesty sometimes takes a back seat.

I will continue to show this segment to my classes, but will each time be saddened by the thought that, with regard to the post-lesion trace, Thompson was describing an image that we do not see.

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